[QUOTE] Indeed. A mate has had a Thunderbird engine in an A10 frame in the making in his shed for longer than I can remember...[/QUOTE] A mate had one around 1980, the wiring loom self destructed on the way back from Ireland. Got as far as fleet on the way back before an officious copper noticed the now stealth bike. Rewired in all black wire 'cos it was cheap using numbered collets, a fine idea until they fell off.