This is the page from summit racing website.
Brand:
Ford Racing Performance
Product Line:Ford Racing Tremec 6-Speed HD TransmissionsNumber of Gears:SixInput Shaft Diameter (in):1 1/16Input Spline Quantity:10Output Shaft Spline Quantity:31Output Shaft Spline Diameter (in):1 1/2Tailshaft Length (in):12.00Bellhousing Included:YesYoke Style:Slip-onYoke Included:NoShifter Included:YesShifter Style Required:StockFirst Gear Ratio:2.97:1Second Gear Ratio:2.07:1Third Gear Ratio:1.43:1Fourth Gear Ratio:1.00:1Fifth Gear Ratio:0.80:1Sixth Gear Ratio:0.62:1Case Material:AluminumQuantity:Sold individually.
6-speeds of heavy duty gear shifting.
Transmission, Manual, Tremec 6-Speed, T-56 HD, Ford Small Block, Each
These Tremec 6-Speed HD transmissions from Ford Racing are the same transmissions that came in the 2000 Cobra R and Ford Racing FR500 Mustangs. The can handle a whopping 440 ft./lbs. of torque.