We were also skeptical of the billet aluminum drum on the street, so we opted for the billet steel drum, the super sprag, really deep pan, the 5 cluch deal and a few other parts, all spec'd from A&A, and ours has been awesome at over 700ft-lbs of torque. The only thing I have torched was a tail shaft governor...A&A makes a kit to eliminate that...I ended up swapping tail shfts...