I have a non-HO 5.0 EFI from an 87 mark 7 and I was wondering what kind of pistons where in it. I was thinking of possibly using this motor for a V-8 conversion. I figured I'd let you guru's help me on this. Anyway, I was thinking stock shortblock, victor jr heads, victor jr intake, and a 750DP along with a solid roller cam. Feasible?