Replacing manifold exhaust gaskets can be easy but it could be hard. Rusted and heat cycled bolts 30 yrs old tend to snap in the head and this sometimes requires some expert stud removal techniques. If you have an exhaust leak it is most often a cracked front manifold and that could require attention as well. I estimate labor on this job could run anywhere from 3-5 hours.
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, 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 "