You can use the 55 chev v8 manifolds. The dump upwards slightly and then exit down a dump forward on drivers side and rear on passenger side. Normally you have to offset the engine about 1-1/2 inches to passenger side to make it work. I don't think it is a good idea to offset
the steering box and heat-bend the pitman arm. 55 Chev manifolds will still require some offset but maybe not more than an inch or so.