a-exactly what do the cylinders of the prepped block measure? most old blocks could use a bore + hone, and now it could be done with a honeing deck plate=better than factory. b-a K.B. hypereutectic is stronger and lighter than stock, and fine unless u are running big blower or nitrous. c-the L2316F was available in standard and is the equal weight as stock at 720 grams. the L2322F was lighter at 662 grams-was your engine rebalanced to match the L2322F pistons? d-how many miles do u plan on getting out of this block? go +.020 for 80,000 miles, and +.030 for another 80,000, and +.040 for 80,000 and +.060 for 80,000=320,000 miles