To make a long story short, I got a gsr shortblock with a spun bearing for a great price, then found another gsr longblock for almost the same price. (I love poor people) So I'm going to rebuild & use one for a complete GSR, then build the other this summer to go from D16 turbo to B18 turbo.
For $50 extra is it worth it get pr3 pistons to bump it from 10:1 to ~11.5:1? Realisticly it would be more like $25, since I could pawn off the p72's for some cash. Everything else would be stock, aside from maybe a cheap i/h/e setup, along with ectune. I haven't found any compairisons, since most people don't stop with just pistons. Keep in mind this would just a temporary setup for a daily driver.
The other thing would be "resale value". I'll be selling it later on, and thinking some ricer would foam at the mouth for a chance at a fresh, high CR GSR block...