Brief update.
My achillies tendon isn't ruptured, but it is detached, in a 'ripped off it' kinda way, from my calf muscle. No wonder it hurts so much.
It does mean that I won't need surgery and the cast is off and replaced by a monster sized orthopedic boot for the next two months!
Also my toe is broken!
So, while I am sitting here watching YouTube videos and shooting spammers I started to ponder...
I am going to get a Salisbury (Dana 60) axle to rebuild the back end of the tractor.
Is there any mileage in fitting in an autobox somewhere to increase torque, in the converter, and soften the shock from the motor when I stamp on the volume pedal? Probably not I think.
Anyway, just pondering, but genuinely interested, for now....