I know a lot of different WRX owners with cars in various mod states, and none of them have had any problems with their trannys. I'm making a bit more then stock power and my only problem is a shot synchro because of a missed shift one night .

I was planning on doing a gearset just to be on the safe side and so I could push things a little more, not because I felt like I had to do it. Since my synchro decided it didn't like me plans for the gearset have moved to the forefront and will be happening sooner then I had planned on.