Headers for a A body

Rapid Robert said
Professor, to confirm, the hedman 78500 shorties will not fit an early A? I have a 63 A 360 with EQ iron heads (I understand the ex port is a bit different). I have a set of those hedmans not yet installed. I mocked up some magnum ex manifolds but I had to jack up the eng to clear the steering box to where I dont think the air cleaner will clear the hood plus I also had to lower the steering box. this is a hobby stock race car with thin aftermarket steering column so there was no interference there. is there another set of iron ex manifolds that flow reasonably well? Professor thank you for your thoughts. RR

They can be made to fit, but like I said, you have to be willing/able to do fab work to modify them. Remember, these are designed for later ('67 and up) A bodies, the early As are quite a bit more confined.
The passenger side fits fine, however the driver's side needs a bit of work.
Stock:

Modified:

Note that the #1 tube has to be cut and rerouted so it joins the #3 tube, and the collector needs to be reworked after #1 has been removed from it. Since #1 and #3 don't fire at the same time, sharing the #3 exhaust tube has minimal effect on the performance of the shorty header.
63 dart v8 swap