I have a 48 (the same thing) and have a 79 Z28 Camaro front clip too. I hear these are too wide for 46-48, how is yours? Also you can buy 2 inch widened rear fenders for your car. Either that or make your own because it would be easy with these fenders. Can you post some pics of your car, I am interested in seeing how it looks, etc. I want to air bag mine with my 79 front clip too, 383 stroker or 400 SBC, etc. Rear end I am not sure on yet.