Passon or Tremec TKO 5 speed gear box consideration.

I also looked at the t56 swap option when I was considering an overdrive for my dart.
I would love the a855 from passon but the wait is long. I like to puzzle things together.
With the t56 the cutting and fabricating is not a problem for myself. The price tag is about the same for the t56 swap or the a855
So it's basically the same.
Myself the 855 swap is easier because no fab work.
I decided I will stick with hemi overdrive gear swap since I have the cases that need rebuilt anyways and I want to keep my hurst ramrod shifter.
I keep stumbling back to the t56. If only I could stumble on a cheap t56 then I would go that direction