The whole kit was so easy, the instructions are a little confusing, but basically it was like technic lego, this bolt here, that plate there, swing arm there.
Its solidly made, looks brilliant, and despite what Mr H at SBD told me, i easily reused the standard throttle cable, which incidentally is about 2 inches longer than the jenvey one supplied.
I mounted it top side on the manifold to TB bolts for 3+4, took about an hour including mincing around with the adjuster.
Out on the road the pedal now feels purposefully stiffer due to the extra spring, feels tauter, infinitely adjustable via the right foot. Added bonus is that i knew the home brew strip of metal was bending and the butterflies were only opening to about 95%. Now i can feel the back end of the butterfly spindle hitting the stop through the acc pedal, very reassuring feeling knowing its fully open max throttle.
at 105 quid it seems like a good idea to give it a miss, but now its on i would recommend it with upmost pleasure.