[Rwillia4]

767Jockey,
other than appearance there are not any fundamental differences between the two systems. Obvious things are the weber look on one and the fuel rails running in the middle of the other (TWM). Cost is a huge difference between the two TWM is 1/4 the price. Components you will need to run a FI other then the intake and horns are a fuel management system (fast XFI is what I am using), Hi pressure fuel pump, fuel pressure regulator, return fuel line, O2 sensor and a bung welded into your exhaust manifold.

What I have found very interesting is with the independent stacks a wild cam sounds very mild because there is no actual intake “air” overlap in the manifold. So idle is very smooth and not lumpy.