go with what will make you happy, if you're going to complain about the 430 not being as bare boned and raw as the CS then get that, but if you want a bit of luxury and a 6speed then lower it and swap the bumper on the 430
go for the 85 Camaro! I love that style the best out of them, I almost got a white one with red interior in immaculate condition at a police auction, it sold for $700