I have not looked at any piston catalogs lately.

You just need to find out the total dish in cc's.
Yes the 307 are flat tops, but have 4 valve reliefs & a large chamfer on the outside top edge of the piston..

If you can research, you need to get the 307 pistons that are flat tops w/the 4 valve reliefs, but,,, have no chamfer on the top side of the piston.

Maybe some guys here have the correct P.N. you need?

Guys!


MBHD

12 port SDS EFI