As mentioned I’m not going to go down the big BHP route so will never need to reach the upper limits of the standard parts, (excluding Injectors of course) it was more of a curiosity while I was changing to the 4x4 plenum “ knowledge is good “
Obviously Ford new the restrictions of the 2wd plenum so why should they go to all that expense of re-designing and tooling a new one to not really improve it that much? I’m sure the standard factory 4x4 would have worked just as well with the 2wd plenum.