EA82 Carb to SPFI Head swap

[pappy52]

After spontaneous(sp) mosquito abatement (fogging the neighborhood), I replaced my head gaskets on Scooter, an 88 GL-10 EA82 SPFI 231K mi. After reassembly, with new camseals, etc, it was still a smoker. I took it apart again and found a hole in the exhaust port "Y". I have a carb engine that seems to have an ok head. Should I use my "rebuilt" cambox and cam, or keep the carb parts all together? Also, how the dingles do you get that pipe on the bottom of the carb head off? I think I will have to pull the carb engine as the cambox bolt behind the pipe has been rounded off. Thanks anyone, or everyone. I have gotten alot of good info on this board.