By PGM, you mean an Ibanez PGM right? If so, you need better wood than pine, especially for the trem replacement. I have seen a few pine guitars here, and for a patch up on a guitar that I don't care much I wouldn't mind using it. But not for my main guitar.
First of all, what kind of wood is your RG? If you can't find it locally, I'm sure that there should be someone next to you that makes furniture, cabinets, etc... even some member of the board that might sell you a piece the size you need cheap.