Can't help with info on the mounts but you are sure going to be happy with that rifle. I had one of those years ago and it shot MOA with 220 & 270 grainers without doing anything to the bedding (or rifle for that matter). I think I had Lynx mounts at that time (but I could be wrong).

Edit: Hommers post appeared before I'd finished adding mine. Be aware that the 550 mounts have the recoil lug (rear base) in a different position to the 550 magnum, and won't fit. I don't know how the 602 compared to the 600. I checked the Warne catalogue and only saw the 550 listed but they do make both (ie 550 and 550 magnum).