For the studs I'll just order a set, will cost me around £12 shipped, I can then sell on or give away the older ones. But for this I gotta check which parts come with the set, and which I need... The website doesn't specify and they're not replying today on the phone, so I'll phone back on Monday.
I'm pondering keeping the bridge but dunno... It's got those reversed saddles, which the current bridge doesn't have, and the one I ordered doesn't have either. I don't want to dismantle it all in order to get the saddles back to how they should. So I think I'll send it back anyway.
Thanks for the tips :)