'65 8-3/4 and 904 Trans, Driveshaft Length?

Charrlie_S said
Just a suggestion, Why not get a new driveshaft made, that has a standard "U" joint at the front?
See this thread, post #4 and #6

Not sure what post 4 and 6 say for this.

My transmission doesn't take a yoke, it's flanged to meet my driveshaft.

I need my driveshaft shortened