[LT7A]

Looks like you got into the motor and got some go-fast parts for it -- there appears to be aluminum aplenty near the top. Did you find what had gone wrong with it? Looks like you maybe also got drop spindles. True? Going to be a fun truck with the parts you are getting. I wouldn't sweat the 2bolt vs 4bolt, generic block situation unless you are really going to beat on it. Even if you did, it would probably hold up quite awhile.