magnum 360 into a 74 duster that had a slant 6

i have looked through lots of the threads, some of the questions are unclear. hope someone could answer these ..

1. running a mechanical fuel pump. does this work with the extra part to bolt onto the cam.?

2. HEI style all in one distributor.. will it fit and no clearance issues on the firewall?


3. 727 instead of a 904 . what flex plate do i need?


4. Headers, what ones fit? I have not found any specifically for a fit