I've used WCF 3800 mounts on two swaps and they fit perfectly and the engines were installed in 87 Fiero GT's with the hump profile deck lid. I've even added a short stack intercooler on my own swap and that fit comfortably under the deck lid as well. The alternator has to be mounted low (I use the 99 Astro unit as its so easy to mount) and both deck lid torsion bars had to be removed. If you use WCF mounts and don't follow these two steps there will be interference. If you are trying to do a swap
with the flat top deck lid it might be the problem. I know of at least two other swaps that use WCF mounts and they too fit well. I'm stumped!
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "