I've heard a lot of good stuff about these pistons, how are the pistons rings that come with these pistons? At $160 for the pistons, piston rings and wrist pins they appear to be a great deal. I am looking to rebuild a gsr with these pistons and looking to make around 180-200 WHP. Also, if I were to bore and hone sleeves to 81.5mm would the sleeves become weaker?