Best starting point for V8 swap

Looks great but what kind of manifolds are those? The best manifold setup for the money for an A-body with power steering is a driver-side 340 HiPo manifold and a passenger-side early ('92-93) Magnum manifold with the bigger (2 1/8") outlet. Anything less on a non-stock engine will be a bit of a bottleneck. Of course headers would still be best by far but you need the $$$ for the good ones.