Ok, here are some facts about the SC10
Let's start with the specs:
Length: 11 meters
Width: 2.5 meters
Height: 2.94 meters
Weight: 8665 kg (empty), 15000 (maximum authorized weight, PTAC in french - read on though as I've got further docs about this).
Engine: front, 6 cyl 7.2 liters 144 hp (later versions had 160 though)
Max speed: 60km/h
Capacity: different according to versions, read on.
A bit of history now. There were many versions, most of which were replacements to old ones (unlike, for instance, the Fiat 421 variants):
1964-1975: beginning of a first production cycle with the "SC10U".
Inside of this cycle there were some variants called UB, UBX and UC. They shared the same specs and looked about the same. The difference between UBX and UB was the sitting places' displacement.
1975-1980: second cycle with the "SC10UM".
"M" stands for modernized. The main differences concerned the interiors, the rear window (double in the U, single from the UM onwards) and the Paris livery (I'll tell you about it in the next paragraph). There were many subvariants of the UM, called "UMC", "UMR", "UMCR" etc. They all looked pretty much the same, their main difference being capacity: I've attached a drawing which will help you get an idea.
The 1977 "UMR" variant had a white roof in the Paris livery (they had been all green until that date).
1976: production of the "SC10UMA" begins.
Variants whose names end with the "A" mean they feature a rear balcony.
1979: Renault acquires Saviem and the bus changes name (Renault SC10xx instead of Saviem SC10xx).
1980-1981: "SC10UO" introduced, featuring some minor changes like the back lights.
1981: third and last generation with the "SC10R".
"R" stands for "restyled", as these buses featured a totally new front part (more squared) to make them look more modern, and the doors had glass in all of their heights (glass had only occupied the upper part until that date). The interiors, and thus the capacity, was unchanged.
1987: the rear balcony returns with the "SC10RA" (the UMA variant was discontinued with the UM). These buses featured a two-part rear door half as wide as the others, as you can see in the pics.
1989: the SC10 production stops.
As for liveries, I collected some data about the Paris trans company (RATP). There were essentially four liveries, which I called in the pics "greenorig", "greenold", "greennew" and "current" (that's the correct order). The first one equipped the very first SC10U's: the second one was introduced in 1975 with the SC10UM: the third one in 1981 with the R's: and the fourth one came in the late Nineties and equipped the last R's. "Greenorig" and "greenold" featured a green roof, until 1977 with the UMR variant. I hope the pics will help you out.
There was even a blue,experimental livery which was almost only used in prototypes. Maybe it could equip the first production year.
However, unlike Italian buses, this livery scheme only applied in Paris, and other towns featured SC10's in lots of different colors, usually white + something else.
As for capacity, you'll find a file which shows it for pretty much all of the production (SC10_capacity). It's in french, but I hope it's comprehensible. I'm sorry, I realised that earlier today I sent you the wrong file: just ignore it.
The file "cap_weight" shows capacity and weight for the UM variants and the R. ("assis" means sitting; "debout" means standing; "masse à vide" is the empty weight, "masse en charge" the full weight and PTAC is the max weight).
The file "SC10_cap_variants" refers instead to the first bus series (SC10U). As you'll notice from some pics, the SC10U was also produced in a 3-door variant (others had almost always 2 doors): it's the "2 agents", meaning that the driver was helped by a ticket taker. I have no side drawings of it (sorry). It had fewer places but in TTD it could have a shorter loading time. Notice the first door was half as wide as normal.
I included a two-door SC10U drawing too, so you can see how its double rear window was designed.
As for life, since some of them are still hitting the street, I'd say something between 16 and 18 years would be fine.
To Lt Gable: feel free to correct me if I wrote anything wrong or if you have further info
Hope this helps.
