When I did my turbo, back in 1979, there wasn't much info available about turbo setups, available to the hotrodders. The first issue I had was fuel flow (carb issues). Finally got that squared away, and then started blowing the head gaskets. Tried different brand/type gaskets and was still blowing them. Had the block "O" ringed, and got a SCE copper gasket .040 thick. Then started breaking rings and/or pistons. My problem was detonation. The stock gaskets were acting as "fuses" and saving other parts. Back then there was no such thing as a boost timing master or O2 gauges (except big in shop units).