Quick update as I'm all excited
Dry fitted the fuel tank today and it fits like a glove, didn't do anything else as I'm sposed to be decorating and couldn't stay long at the garage.
The cause of my excitement is that I managed to locate a late SD1 Vittess gearbox and all the bits to make it fit.
yes I got one so we're up and running as soon as the lounge is decorated....can't wait