As a rebuilder, I also sell the master kits for those backyard mechanics that can tackle the job themselves or have a friend that will rebuild the unit for you. This ad covers all the GM 4spd. models, including all the performance Muncie boxes as well as the Saginaw and all the Borg/Warner T-10 units, 1957 thru 80's Super T-10's. Pricing is $139. and 10.-shpg. for any of the kits displayed. Discounts available on three or more kits. Can call with CC or use online Paypal. Other manual trans kits available, (T-5, etc.), just email with your request...(as well as any hard parts you may also need), thanks. Richie in NJ, (39yrs. building and stocking) Street-Wise Performance