Yes, the pistons would end up about .030 in the hole with these truck pistons. No eyebrows so that will restrict cam duration/lift; your'e gonna end up with about .080-.100" less P-V clearance than the pre-1970 stock 318 pistons that were at zero deck, and around .200" less P-V clerance than a typical performance oritented flat top or domed pistonat zero-deck. So get your Dremel and marking pen out! I found this discussion in that regards: