I have absolutely no doubt Mike can do this. If the case is clearanced, rock on. But if it's not, there's quite a bit to remove to fit an 82mm, even with smaller(Chevy 2") journals.
If you do end up with an 86b Webcam do me a favor: Use 1.5 rockers and CRANK the compression up. I'm at 10.2:1 with absolutely no overheating, pinging, etc...
The 86b LOVES lift and compression.