Hello Everyone,
I started this post because I was having a lot of trouble finding manifolds or headers that would fit a 54 AD with a 350 engine. The block huggers by Hedman #68360 are a very good fit but THE ORIGINAL STEERING BOX STILL MUST BE MOVED. I wish I could report otherwise. In my application I have a Mustang II IFS with a manual rack & pinion connecting to the original column minus the original steering box. These headers give me enough room to make the steering linkage connections with 2 universal joints. As far as spark plugs go, normal length plugs work fine.
