& yeah I should have prefaced by saying 90% of motors I do uses about the same rings. Speed Pro/Mahle/Total seal .043" or 1/16" plasma molys. The other 9.9% get Total Seal TNT's or Speed Pro Hellfires. & this motor just happened to get a set of Stainless. If I built Winston cup or Pro stock or Comp eliminator motors I'd taper the cyl wall finish more to each individual ring type. But for the traditional moly & hellfire type stuff I've had exceptional results with the 500 grit & plateau finish.