Hey man, been looking into the Z1 400hp package on here and trying to find anything regarding fitment issues on the RHD and found the OP that you commented on with no reply so here I am. Did you find out anything regarding any issues or install any of the parts yourself too?
From what I've gathered the manifold fits but the headers are impeded in their travel to the test pipes/cats. Work around could be custom headers? Hope you're still active!
Regards.