Baja warrior with the 5.5

The 5.5 should have a 3/4" shaft. Measure yours to be sure. The TAV30 fits the 3/4" shaft.

Torque converters don't fit every frame though. Depending on space, you may have to raise the engine or cut parts of the TC backing plate or frame to get it to fit. They're not always just a bolt on deal.