Although that rearend is manufactured by TDS and may be ok quality.. it would be best to have the machining tolerances double checked before assembling any of your hard earned money into that housing. Will cost more but cheap insurance to protect your investment and safety. About speedmaster parts.. same as Procomp.. I would never recommend that companies parts for any critical components. And if you did use them.. be sute to double check machining tolerances and try to buy bare components and finish them up with better quality parts that are known to last. They copy cat other companies designs and then use the absolute cheapest parts they can to lure you into purchasing them. With 1000 horsepower.. there should be absolutely nothing cheap in the drive train of this car. Figure on about 20,000(American $$$) or more for just the motor, trans, and rearend alone. Good luck on the build and don't forget to take pictures for us.
