There is a 280SE 4.5 108 series car available in the local junkyard. Are there any switchable parts with the 113 series and the 112 series from the 108?
I didn't know you had local junkyards where you live.
If the rear seat has side reading lights for the passengers, get those just because they are cool. The parts that are going to be common would include some switches, fuel sender, _maybe_ the fuel pump but not sure on that one, steering wheel if it is early enough, rubber trunk mat is same as W111 so probably same as W112, headlights _might_ be compatible with W111/W112, door contact switches, interior door handle for late 113 (the chrome opening handle), ... Other nice things to have would be front headrests with mounting rails, rear headrests with mounting, euro-style licence plate light, ... that's what I can think of off hand. If it were a 280 SE/SEL 6 cylinder there would be more engine and injection parts that are the same or similar, but the V8 has entirely different fuel injection... Some people on ebay say the bumpers are the same but I think that they are not. (the same as W111 / W112). Window cranks (if it doesn't have power windows) are the same as late pagoda. I'm sure I'm missing a lot of stuff from the compatibility list...