There have been some questions on what kits fit the 3.3 level trucks. Heres the run down....

3 Speed Kits - T-Maxx: The current 3 speeds kits Only fit the original and 2.5 level trucks. It does not fit the 2.5R or the 3.3 due to a change in the transmission slipper clutch. We are working on a new version which should fit the 2.5R and 3.3's. No release date as of yet.

3 Speed Kits - Revo: The 3 speed for the Revo fits the 2.5R version for sure and the 3.3 level truck. 

Turnbuckle Kits: T-Maxx 2.5R and 3.3 we are going to be offering a new part number for these. They are different than the 2.5 trucks. REVO 2.5 and 3.3 are the same.

4 Shoe Clutch: The 4-shoe clutch kit fits all levels of T-Maxx and REVO along with the Jato, Rustler and Stampede.

Rear Steer Kits: T-Maxx 2.5 Rear steer kits fits only the 2.5. We are working on a separate part number for the 2.5R and 3.3. Should have these ready by the end of Jan.

That should clear everything up. Now if they would just quit changing the T-Maxx we would be all set again.