T-5 weak links... where do we start? lol!!!
3rd gear, 5th gear, input shaft is to far out of the oil bath, the case itself is weak... and on and on. The aftermarket gear sets are nice but if your making big power, the t-5 WILL blow up, even with good internals.
I will add, I have experience with G-force gear sets and have driven a Astro t-5 car. The Astro seemed louder than the G-force, for what its worth.