An '86 will be throttle body injected and should have an EGR. Whether or not he can get away with eliminating the EGR is a different question, to be resolved between Artster, his conscience, and the Colorado DMV.
You could also try Clifford Performance Research. They make a lot of stuff for the 6-cylinder engine and may still have items for the 4-banger. Sorry I don't have their web address. I thought I had it bookmarked, but that may have been on the old computer.