Cheers guys. food for thought.
I've had a look on the qpeng website. this is what they say.
"Our original development Mk2 has now covered 30k miles with an ’AGU‘ engine on its original 150k mile 8v 020 ‘rod shift’ gearbox without any problems. However, the clutch had to be uprated and we have found the Sachs ‘sporting’ unit works well. While it greatly simplifies the conversion and keeps costs down, it has to be said the gearing is rather short for the power available."
Why can't things ever be simple.