3sp on the floor to 4sp

I am going to do the same swap myself on a 1974 Duster. I have not done it yet nor have I done this swap in the past. But, what I have been told is the biggest items you will need is the 4-Speed Tranny, 4-Speed Mounting Plate, 4-Speed Linkage, and 4-Speed Shifter Handle.

Also, I believe the yoke on the driveshaft may need to be changed to accomodate the 4-Speed. Thanks,

Where would one find this? Is there an aftermarket supplier? I am thinking that original equipment may be hard to come by, plus expensive, and not always in good shape. I do have a 4sp tranny, but no 4spd linkage, or mounting plate.

Sorry, not trying to hijack the thread, just have the same questions, but mine are for a 70 cuda.