Thanks for the response, but I don't think I was clear. The front hub does not have a drive gear on the engage with 94430000, to drive the speedo cable.
The hub has a shoulder and I wanted to know what part number the hub mounted drive gear would be ?
The second point on the rear hub involved getting the rear wheel to run central. Do I need to use the 10mm engine mounting spacer (supplied in the SIP wide tire kits) to move the engine across to keep the rear wheel central in the frame ?