I personally went with an MSD Ready to Run dizzy bit I hear a lot of good about both TFI and HEI. If I were to do it again I'd go with the HEI simply because its a one wire set up, looks cool, and the parts are readily available almost anywhere. Check out D.U.I. if you have the extra cash. They are highly regarded by the AMC guys.
I wanted the Mallory kit from BJ's but they couldn't get me one after two months of waiting on that distributor AND a radiator.
So I just cancelled my order and got everything from Summit.
Wag Rebuilt 360, 260H, 727, Locked 44, AMC 20, 208, 31" M/T's, 4" Rustys, 2.5" Duals. SOON:SOA SF, 496, T400, Doubler, D60's, 37" M/T's <-TOY
Cherokee Rebuilt 360, 2" Duals, mostly stock. SOON: Hot Street 401, 4'' Rustys, 33" BFG A/T's maybe a T-case to get rid of Q-Track <-TOW RIG