http://store.summitracing.com/compar...=KeywordSearch
So here is a comparison of the two pistons,
The compression height on the Ford piston is almost .300 less than the 302 chevy, this means that the piston would be .300 down in the Cylinder head. This would be very bad.
You could try to compensate with additional rod length but that would get expensive. Have you tried actually calling wiseco or JE and asking if they have a flat top that meets those specs?