I'm not cutting those pistons. If i can't find the clearance another way i will simply put the flat tappet back in and run it. After all, it did run a 10.06 and pulled 1' wheelies. I was just looking for a bit more, but its turning into more trouble than i care to mess with at this point, but i will give my best. If i have to wait months for heads to show up, i simply wont buy any. These Victor heads are lame, i have never seen a combo with them that was impressive in any way. I dont have the answer why they dont make power, they just dont. I think its a velocity thing, but i dont think anyone has the answer. 600hp with Victor MW, no problem, 700 you are gonna work for it.