I looked at my receipts from nine years ago and apparently Hughes doesn’t use the same part numbers. Anyway I think your combination is going to be a lot different than mine. The KB quench dome pistons I bought were 0.017” above deck and were good for 9.25:1cr with a 62 cc head. The pistons you are looking are at 11.5:1 cr. I would think clearance would be a concern.