They are pretty good and that's where all my pistons came from and they do know of my motors, so go figure. I think I must have one of the most abused stock motor in the performance in the world. And I'm not talking about dyno queens who claim their stock SR20 bottom ends can handle 500+whp. Well, until they've put that 500hp to the test on a highway at suststained speeds, why claim what it can do. It should be like what it can peak at. I can guarantee you guys the results will be different and pop goes the weasels. To be a performance shop, building a performance drag car with a performance engine and claiming to have built the head, but left the bottom end stock, is something that makes me go, hmmm

I see someone trying to sell more SR20s because if the average tuner tried that, they'll get to know the inside of their blocks really quick. I wanna see of these guys pull off what JUN did and let's see how much $$$s get smoked in the process.
Now, back to reality and low budget boosters like most of us, your stock CA pistons, with some fresh rings and rod bearings coupled with a fresh headgasket, should be the cure for the aging CA18DET. But if you wanna upgrade, a set of wiseco pistons and steel headgasket should keep you safely boosting.