FWD Tranny Diff Upgrade?

[SVX_Smoke_Out]

Ok i got two FWD trannys that both need a ring and pinion well im not sure if i well be able to use one of them beings it got pretty hot and there may be some bad internals but one of them i can use and im just wondering what other subarus i can get the diff out of. I have heard you can put the diff from a legacy in and that it is a 4.11 versuses the svx 3.?? Is this true if not is there any other solution to geting a diff for the tranny. I have had my SVX for 4yrs and only had it on the road for 6months and now im in school so im trying to save what i can to fix it so im trying to find out what fix would be cheapper by a rebuilt tranny or find hypo gear set for diff.