IS it the regular 3550?? There are 4 different levels. The TKO, TKO 500 and TKO 600 are far stronger than the 3550 which is rated at 350 ft-lbs.
The z-spec T-5 is rated at 330 ft-lbs.
Depending on what level G-force trans he has, it could be stronger than the 3550....and it's definitely lighter
I would take the g-force on that fact alone