Thanks Scabber - yes, musnt get carried away and forget that Hi Joe, welcome to the forum - a street tracker, nice choice - very usable! Perhaps I'll do one too So, the rims are Mikes XS 19" rims 2.15 rear and 1.85 front running 110 and 100 section tyres respectively (both "front" tyres). Central wheel in Birmingham will no doubt have similar 36 hole rims and spokes. The hubs are both front XS650 hubs. If you have access to machining, you can easily spin up the carriers etc to take a rotor and sprocket. Or, you can purchase Omars kit - http://www.omarsfiberglass.com/#!street-tracker/c1860 The rephase was done by Heiden - I just shipped my crank to them. The cam is their mild rephased street cam. I also purchased my Pamco ignition from them too. Can't fault Jerry at Heiden. Good quality and good service. Be good to see what you're starting with and some pics. Always happy to help if you need it.