I decided to moderately upgrade my transmission to a Level V by RPM Transmissions.
RPM Transmissions T56 T-56 4L60E 4L65E
These guys were an absolute pleasure to deal with. Rodney and Todd will go over everything with you and make sure you get exactly what you want. He REALLY knows the T-56. He has his own packages/upgrades, and is also a G-Force dealer. He has already done a few G-Force upgrades for TT vipers, and also does as a lot of work for Lingenfelter. His prices are extremely competitive and his service is top notch. You simply give him a call, decide what you want, and he ships you out a complete transmission ready to bolt it. Once you swap out the tranny, you put your old one on the pallet the new one came on and ship your old tranny back to him. Shipping is all arranged through RPM.
I went with the Level V and had them change the 5th and 6th gear to 0.80 / 0.62. The ratio change really made 5th and 6th more useful for me.
