A few highlights from Installing a Tremec Magnum 6-speed transmission in my 69 Mustang. Discussed in video: Clearance problems, bellhousing and crossmember recommendations, and parts list.
Related videos below:
American Powertrain / Tremec Magnum / '69 Mustang: https://www.youtube.com/watch?v=o_lK5-Zv6pY
Driveshaft driveline angle basics: https://www.youtube.com/watch?v=YgNZfIR-8Ng
Tremec T56 TKX