Bob, that is an awesome video mate ( Raving nutters or what )
No wonder you want a V8 engine in your build if that's what you are going to get up too
I remember when my older brother bought an Austin champ home, that was fitted with a petrol RR engine.
Daft bugger would walk all the way to our local garage ( 2 miles ) just to fill a can of petrol.
Once he got home, he would stick it in the Champ, p**s about for ages trying to start it.
Once started it wouldn't go untill the enginge warmed up, he'd get it warm & promptly run out of fuel
Don't remember him ever going more than a few feet in it.