I think you might be selling them both short. While I agree a good set of aftermarket bolts would be in order, I also agree with skrews...as long as the revs are kept to a reasonable level, you should be fine. Now, on the pistons, the cast pistons used in pretty much all domestic engines since the mid 90s are hyper alloy, which is stronger than standard cast slugs. Also, keep in mind there are several factory engines making similar power levels with stock cast hyper pistons...some with significantly higher compression ratios. In short I wouldn't worry as much about the pistons as long as you're not detonating.