The 250G will take a long time. Very limited time and money... I am just slowly accumulating parts right now. I have managed to come up with all NOS cables, gaskets, inlet manifold, rear fender, fuel tank petcock and so on. Wheel bearings and swingarm bearings through eBay, got an order for a few more odds and sods coming from motoduro.co.uk. I have a front guard that looks like some sort of aftermarket YZ250F part that came off my HL500 that I will clean up and polish for the front. I have some good second hand rims, just needing some spokes for those.
So, a few more bits and pieces to source yet. The plan is to have a rolling chassis by maybe April next year, and with luck have it done late next year. It's gonna be a dirt tracker rather than a motocrosser, although that doesn't mean anything about how I'll build it beyond the fact it'll have a trials tyre on the back...