Maybe I am thinking of the wrong trems since Im dont know all models real well, but I bought an RG520QS body, which uses an Edge normally, and dropped my Edgo pro from my RG1570 right in. The only thing that needs to be changed is a bit of wood should be routed out between the studs since the pro is a bit fatter underneath. It will still go in but you dont get the full range of motion when pulling the strings higher.
-Greg