The place I bought them was trying to get this resolved they are the ones who after mutiply phone calls suggested I try and talk with them. Take them back to my suppler after I all ready installed 6 pistons, would you take them back. This is customer service issue plane and simple. You guys bust 440 sources balls because he won't warranty a 6 month old part but you defend speed pro because they don't know, me get a grip.
4.500 bore