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It looks like there is minimal clearance between the motor mounts and where the steering box would be. I think,..... but don’t know if these would work, take a look at this and “you are on your own” disclosure.
This is a 429 cid in a 48 frame with a Toyota steering box. Sanderson makes headers that hug the engine. This intentional dent was to fit the steering box in the original
position. Maybe your steering box position is different. This truck uses the original straight axle.