Its been shown over the years and ive seen it first hand if you take out the shortened compression height of the stroker pistons that factors in them being really light a oem CH performance piston vs a old trw produces a very minimal difference in performance and if good machine work is done and some common sense is used they are not too hard on parts either.

I myself will use all the old trw-s at $300 a set for street builds vs the now $800 diamonds that were $500 just a few years ago for the same piston.

Look how the stock 340-s ran and reved and look at there oem piston weight.