I found this on the Street and Performance site. Has anyone heard of this tail housing? "The T-56 6-Speed is 3 1/2” longer than the muncie. The JTR Book by Mike Knell has the product to adapt the T-56 to a manual speedometer drive. Borg Warner or Visalia offers a shorter tail housing for the T-56. This tail housing will move the shifter location forward 2 3/8 “.