• Close ratio (1st through 4th)
• Gear ratios: 1st 2.87; 2nd 1.90; 3rd 1.34; 4th 1.00; 5th 0.68
• Features improved shift forks, one-piece counter-shaft, gears made of 4615 steel which increases the torque capacity over that of the M-7003-R58 model
• Input shaft is 26 spline; output shaft is 31 spline
• Requires bellhousing M-6392-R58 to install in a 1979-1995 Mustang
• For 1979-1993 Mustang applications, use M-5059-A crossmember (79-81 will require modification)
• For 1994-1995 Mustang applications, modify vehicle crossmember, lengthen driveshaft .625" and use clutch fork E6ZZ-7515-A
• 31 spline driveshaft yoke required, M-4841-A recommended
• Requires unique clutch disc M-7550-T302 (10.5") designed for use with 26 spline input
• Can be used in 4.6L applications with bellhousing M-6392-M46 and Clutch Kit M-7560-T46 (11")
• Transmission uses Synchromesh fluid

These are the same Tremec HD 5-speed manual transmissions used in the 1995 Mustang Cobra "R" models with the 351 5.8L engines.