i might be getting a 1991 camaro rs he says it has a 350 in it with a 700r4 do they come factory in 91? also i could get a roller for parts its a 1987 camaro berlinetta. Would parts interchange such as doors front fenders front nose clip and rear bumper? also i want a 5-speed so how hard would it be to convert it from a 350 auto to a 350 5 or 4 speed? and maybe what trannys would bolt up any help will be awesome thanks guys!