ok we know that you can tap and drill the lifter valley and use stock 86-95 lifter tray,dog bones and roller lifters .But your limted cams enless you wanna spend the 400+ dollars at compcams or other places because the lifter bore being slightly smaller . but why couldnt u use washers on the bores an get the welded,machined on there or somthing as simple as jb weld to hold em down to increase bore lenth to the corect size