Vegas. Im not a Ford guy, so what's the bore and stroke? 4" is the bore I assume, plus .030 over? If so, I need the stroke length. Also, do the flat top pistons have valve reliefs?? If so, how many cc's? If you dont know, then how many reliefs are there? The deck height as you have it doesnt mean anything, I need to know if it's zero decked? Is the piston even with the block when it's at TDC, or how far in the hole is it? Stock deck height is .025/.030 on most engines. Finally, has any port work been done to the heads?