Engine/ Trans Combo?

Hello all. I have a couple of engine / transmission questions. I have a 360 with a casting code of 4006830-360-10. I see that it is a 1971-89. I also have a 4 speed manual trans overdrive that came from a 83 dodge van.

1. What transmission is this or what code am I looking for to find out.

2. Will this combination of motor/ transmission work together?

3. Is there any reason not to use this combination in my 64 Dart? Trying for around 400 HP.

4. What is the bell housing I will need for this combo if compatible?
The only reason that the '4 speed manual trans overdrive' A833 will NOT work is that truck transmissions have the B-body length shaft, not because it is an overdrive transmission. truck transmissions also run a 143 tooth gear flywheel with a larger bell housing that will NOT fit in your 64 Dart without cutting the firewall. you would have to cut and re-engineer the transmission mount & crossmember with the longer shaft/& casing that trucks & b-body's share