
The performance versions came with extractors & triple SU or Weber carburetors in the GTR XU-1 Toranas. I was almost going to get an aftermarket EFI manifold that looks similar to triple Webers but the price was getting up around AUD$1500 with throttle-bodies.
They are a good little motor for giving a hard time and considering my dad had several spares out the back it was easy to get hold of. I have even considered turning one into a forced-induction two-stroke (there I go with the two-strokes again, mmmm high reving 3.3 litre two-stroke... )