I have a set of Kieth Black pistons from a build a few years ago that I would like to sell but don't remember exactly what they are. Can anyone I D these from the pics. I also don't see a bore size on top like most but up inside I see 060. I do believe they are 060 but not sure. On one side by the pin they have KB 190 and on the other side there is SL 03. Thanks for any info.