2Lucky2tha7

iTrader: (3)

My tranny finally gave out a few hours ago in 1st gear. Sounded and felt pretty nasty!! Tried to move and it was obviously real "clacky" and if I tried to move forward or backwards, it would "catch and try and go in the opposite direction. My guess is that a few teeth sheared off.
Anyway.
I've got a 12A tranny in my garage as well as a 2nd gen NA tranny that was originally in my brother's 350rwhp 1st gen and from what I remember, it started sounding a little noisy before the car was put away. So, I'm a bit weary of that one. The 12A tranny feels more solid, but my question is this: will the 12A tranny hold up to my app. 200rwhp 2nd gen, or will I be replacing it in short order? I honestly don't know how much stronger the internals are in the s4 and s5 trannies as compared to the 12a trannies. I'm dropping the tranny tomorrow morning, so I figured I'd post this up in the meantime while I search around on here. If I don't get any responses, I'll probably go ahead and just put the 12a tranny in. It also looks like I have to swap the tail section as well because of the trans mount casting.
Thanks.