I have heard many times about using 2.7 heads on 3.0 motors to increase compression ratio. I believe the 200 & 225 from 1986 & 87 are 2.7's. Are there any other 2.7's? I have seen different part numbers for 2.7 heads. Are they all the same? My 1997 225 Venom has lower comp in the two bottom cyls. Are the 2.7 heads made with equal chambers or are they also made with bigger chambers for the bottom cylinders? I would like to get some 2.7 heads, but I'm not sure what to look for.... Also, safest way to plug the relief holes in the liners? I'm thinking some kind of epoxy would be the safest (and easiest) way to go. Anybody with experience with epoxying the relief holes? What brand and type to use?

Hal