Tama Speed Cobra Double Bass Pedal with Direct Drive Conversion by ACD Unlimited. You'll also get the original chain drives if you ever want to put it back the way it was.
Newer bearings by Bones Reds installed.
This is the 910 version with all the customizable features. Sells new for $600+. The ACD upgrade would be another $175 new, so assume my price is firm.
Longboard version if you wanna do heel-toe or swivel techniques. It can go as fast as you can take it!