I have one older imco sc advantage xr upper
 

I have one upper with new xr gears that have 3.0 hours on them. It has Max machine big bearings, a chromoly tower from imco. A max machine torsional clutch shaft. Also has the huge Max machine top cap with 7/16 studs. Absolutely perfect . I sold the other drive and have no need for this one. 918 320 9869. These are the imco sc advantage first style that they took the bravo with thick snout and put a steel tower in and xr gearsets.