Can I use B or C body manifolds fore better flow on my sleeper GTS?

Oldmanmopar said

Use b-body hi-po manifolds from a 70 or 71. The 68 and 69 drivers side will have issues with the steering shaft.

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1967 B-body HP is the one with the different clocking. '68-73 will fit. I've got a pair, probably mismatched years, but will work.