Pro Mini 5V @ 8MHz .. possible?

Yeah, a buddy of mine is letting me borrow his serial stk500 programmer for me to play with. Should be helpful at least. I do still need to put an Arduino bootloader on since that's what I know to work with (for now.)

Ok, so if I picked the 3.3V @ 8 MHz Pro Mini bootloader, that doesn't mean the IC is running at 3.3V, just that it can go that low, but will also happily continue to tick if fed 5V?