Unfired Rebuild Compression?

The bottom end is supposed to have a couple hours of run time on it already, What I've been worried about is whether he actually replaced them like he claims to have.

But, when I do start it, I have no room to complain about bad rings, because I (kind of) trust the guy I got it from, so I didn't check for myself. Since all I really have invested in this is a set of gaskets(I already had everything else, just needed the bottom end) and time, if it fails epically, hey, we tried, now let's bore it .030 over with domed pistons and a bigger cam. If it runs just fine, well, I get to drive my Duster again. Either way, I feel like I'm coming out on top. Of something... I'm not sure what, though.