I think these cars are neat looking, great factory wheels. Does anyone have an idea what one (1983) of these weighs with a small block, auto, AC, no t-top? Found a one owner, very clean red & white one. Sorry, didn't have camera. Would the big block mounts from a early Cordoba work for putting in an rb engine in this? Exhaust manifolds work or headers? What 8 3/4 rear housing fits? Thank you!