Quick question
 

Will a Prodrive back box of a blobeye fit a RB320, I suspect not can anyone confirm

Should fit unless subaru decided to change the location of the hanging mounts on the RB320 .

Should be fine, all newage exhaust hangers the same - as far as i'm aware no difference on the widetracks.

Didn't the rb320 come with a prodrive exhaust?

Yes
3.5inch inward rolled prodrive silencer.

As others have said, yes it will fit but it will be fairly quiet if the rest of the system is standard.

As above it Will fit fine all the newage bug/blob/hawk 01-07 exhaust runs are the same didn't change till 08 hatch

Ok thanks for the input a friend of mine has just got one with a non standard back box and wants to put back to standard, and I have one for him👍