yes get the right one but the last time i seen this was a$ 56. fly wheel if you are in need of a fixs slot the holes drill it out to 1/2 use grade 8 fine threads stuff with good thick washer s a e some fly wheels stock have big sloted holes in them that why i go up on bolts .if it 1/2 the hole you can do it it has been done but it up to you how much money you have. the last time it was done it was 800hp 620 big block the clamping and surface area is what you are looking for so it can t move yes it a cheesy fix s