Joe C

trying to work thru a brain fart - installing an 86-91 corsa cat back system on my 85 corvette. there is an exhaust hanger that mounts to the C-beam on the 86-91 system. I have an OEM hanger but I'll need to drill a couple of holes in the 85' C-beam to mount the hanger. so, does anyone have dimensional data on the 86-91 hole location. I could wing this, but if I have some up-front info, it would probably save me some work. TIA

artvette

If you're taking about the rearmost hanger for the stock system at the main cat, there is 1 hole in the C beam. 3 1/2" down from the top and 3/4" from the edge of the "C" or reverse "C" depending on which side you're on cutout in the beam forward (a little forward of the centerline between the sections)