Own two feet.

I made some good progress last night, engine in, took some wrestling and half a dozen bits of wood, some swearing and eventually she gave in and just slid into place. The carb was connected next, torqued down, fuel, choke and throttle all back on, rear brakes and wheel and the rear shocker last before I ran out of patience and beer.
Cables tonight, wiring and the flywheel, I might throw the oil in too and see if I get a leak overnight. It's quite satisfying given the amount of bits it was in a week ago.