Anyone know the parts numbers for the various "SU" style Hitachi carbs used on the early Z's? For example, the Roadster used the Hitachi HJB38W-1 and later the Hitachi HJB38W-3. The 510 used the Hitachi HJL38W6, at least for the early years. Are there similar numbers for the Z's? I'm also looking for tech info such as needle types, bore sizes, inlet/outlet sizes, flange shapes etc, basically to figure out interchangability. Figuring out the P/Ns is the first step to finding the rest of the