just wanted to know if there is any differences on the carbs or specifically the rubber mounts as someone i know has got a h1 and says his 33 bhp discs he bought wont fit.now going by the shape of the discs,they actually go between the rubber and the engine as it has the holes for the bolts to go through but wanted to know if ther are any big differences or is he just not looking at it right?

AS Far as I know, the carb mounting system has not changed from the ZX4 (1988) through to the late model L's. The only differences are carb diameter n the throat size and if you are lucky enough flatslides from the SP models. All should be interchangeable.

what he said, ive got L4 carbs and inlet rubbers on a ZX-4, and various other combinations, at various times.