My friend has bought a zxr to battle my vfr and wants a hand building it into a trackbike.
Its a bit of a mess and I'm not so hot on my kwakers.

Its a G reg bike, so 89. which would make it a H1 correct?
not so sure as its got a curved rad which would make it a H2?

What are the differences between H1 and H2?
Is there a way to tell which model it is exactly? or does it not matter as parts are interchangeable?

Does the L model track bodywork fit the H or is it a lot of work?

Any info/tips on getting it track worthy appreciated