[Healeys] Weber Manifolds

[Pieter and Linda]

Hi All,
 I am doing a few more "upgrades" to my car over the winter and was looking
for the voice of experience. I am running triple weber's on the "short"
manifolds and am thinking of fitting the longer "works" type manifold.
Beside's the clearance issues can anybody share some factual experience of the
difference in performance between them. The longer ones should give more
torque but is it worth the hassle of modifying pedal boxes and possible the
shroud cutout?
Cheers