Darren uses a Precision Products shifter on a Jeep 727 trans with 904 internals, built by Joel's on Joy [(313) 581-6266] and adapted to fit a Ford. There's a complex valvebody that varies the pressure for each gear. The internal components are all 7075 machined-aluminum, straight-cut gears. None of the internal components share anything with the OEMs. There are two converters that Darren uses with the trans: Both are A-1 Chevy torque converters, 6,400 and 7,200 rpm. The aluminum Dynatech driveshaft sends the power back to the Ford 9-inch Strange Ultra Case with 40-spline, gun-drilled axles. With the 5.0 ring and pinion, the motor screams through the traps at 9,400 rpm.