If you go with a tko, the clutch, bell housing, and driveshaft yoke need swapped. The total would be around 2500.
Or you can do a gforce t5 and just swap the casing out for 2500.
Or a 35fiddy.
Or a hd t5 for 1500 will hold it for role racing. I wouldn't track it though or launch.
It has a knack for destroying stock t5's