I use a TBI, powerjection III, ditto no the comments about the pump, I'm on my second one, wish I had've replaced it with something better. Easy to install and autotune works reasonably well. For best performance a dyno session is needed. You could install a PJIII in less than a day and be driving in the afternoon.......
If you have time, money and the right amount of skill (which I have none), 8 throttles would look nice......
I would at this point call Mark Campbell at Street & Performance I have run across a guy from NC with a 37 plymouth coupe that has a 409 in it with a big block Ramjet manifold that Mark modified to fit the 409 and he is very happy with it.
Big Jim