Check the listing for details. GM T56 Mechanical Cable Drive Speedometer Conversion For Your Housing. Condition: Used. Listed at 325.00 USD. This is not a kit. You send us your tail housing and we modify your GM T56 LT1 or LS1 tail housing to drive a cable speedometer. Normal turn around time once we receive your housing is 3-4 work days. Our conversion keeps your VSS fully functional so you can have both a VSS output and a cable speedometer drive. Included are speedometer gears matched to your rear axle ratio and tire size. Our conversion clears a 3rd gen Camaro/Firebird torque arm mount. Installation is easy, the only special tool needed is a pair of snap ring pliers. All housings are bead blasted unless unless otherwise requested. Our conversion uses factory GM speedometer gears that are included. Cost is $325 plus return shipping. Turn around time is one week. Our commercial customers include Liberty Gears, Tick Performance, The Gearbox.org, Anaheim Gear, Manual transmission warehouse. This is our 10th year of doing these modifications. Please see our other listing for T5, 4L80E, 4L60E, and NV4500 conversions.