The TH-400 transmission was rebuilt with heavy duty sprag and racing clutches, and a TCI Streetfighter 3,000 - 3,400 rpm stall torque converter. A Hurst V-Matic II ratchet shifter provides precise shifts. My brother rebuilt the rear end and converted it from a 3.08 conventional differential to a 4.10 posi-traction unit. Other performance parts of note are a Hurst Roll Control (a device that locks the front brakes at the push of a button to perform burnouts), an Auto Meter tachometer with shift light, Lakewood 90-10 drag racing shocks, RCI safety harnesses, and a Summit Racing 8 gallon fuel cell to hold the $6.95 per gallon Sunoco 104 octane race gas!We have run the car for about four seasons at Bandimere Speedway, our local NHRA track which is about 5,700 feet above sea level. The elevation and thin air is a huge challenge to get the engine to produce power. We now have Mickey Thompson ET Street “drag” radials on the rear of the car. We learned the B.F. Goodrich street radials were no match for this big block Olds torque monster! The tires would spin like they were on snowpack for the first 80 feet. We have recently lightened the car by installing a VFN fiberglass pin on hood and VFN fiberglass front bumper. With a few other changes we have made to DONUTRUN this past winter as well as installing an O2i oxygen system, the car now has turned a best time of 13.05 seconds at 103.22 mph. The added oxygen really helps the performance running at over a mile high elevation. There is a car scale at the track and DONUTRUN still tips the scales at 3,510 pounds without a driver. That's still alot of metal to move! Pretty respectable time and speed though for such a heavy car running at over a "mile high!" Plans for the car over the winter are to install brand new aluminum wheels and new racing tires front and rear. The front tires will be replaced with lighter ones and the rear tires are worn out from at least 200 burnouts! We've been having too much fun in the waterbox I guess!DONUTRUN's made it into the semi-final round of eliminations on Oct. 02, 2009. Another way to state it is out of 90 cars competing that night, DONUTRUN finished 3rd and won a track trophy. DONUTRUN also made it into the semi-final round of eliminations on Sept. 18, 2010 of the Buick-Olds-Pontiac class in the "Best of Detroit Footbrake Nationals". The car brought home another very nice track trophy.The pictures we have sent to friends have somehow made it to various law enforcement agencies and so far we have received very positive reactions. It seems people like something that is different. As far as the name, some people get it, while others are still trying to figure it out!You may also want to take a look at my 1973 Olds 442 and my 1974 Cutlass Supreme that are on this site.