This is just a warning, though I'm guessing most everyone on this sight may know.

If you are converting your groung effects to the aero style found on '91-'92 Camaros, the front piece will not fit properly. It will bolt right up to the front nose piece, however, the fenders on 91-92 are different, so some fabrication is needed is need to fit on older style camaros.

 

Are you referring to the small slits on the bottom front fenders to mount the lower spoiler to? those are easily enlarged to fit the front on to.

 

It's actually the shape of the fender itself as well. On my '90, the fender is concaved in, where as the 91-92 is a little more verticle, thus matching the ground effect.