yo jonesy , they run primo with xs airbox, xs velocity stacks inside, (the plastic rebreather spider thingie in there thrown out) K&N airfilter, a few 1cm holes drilled below, good exhaust pipe, pick em' up ebay etc.. couple hundy if lucky, only mods are filing the airbox bolt slots
and yeah you need a 90's gsxr750 cable or else rig your own cable not that tricky, also all this depends on what the hell the engine is like, ps don't mention the fkn cricket haha