probably been asked before, but im fed up with stressing about my old air cooled engine. just paid £400 to get through mot only to get it back with the engine way too hot and now seems to have petrol getting into the oil. so despite getting mot i Cant use my bus FFS. so any ideas on best / easiest / cheapest conversions to do. wouldnt mind just a standard non turbo subura engine. could this be the better option??? what would be needed for the conversion.