I am considering an engine swap in my van and do not understand what the clearance issues are. I would like to install an Audi 3A 2.0L into it and don't want to cut the engine cover. Is this possible with the stock waterboxer tranny or do I need to switch to the diesel tranny ? I know the 3A has a shorter deck height than an ABA 2.0L so should this allow it to fit without hassle. My waterboxer needs heads, clutch and exhaust which adds up to a lot of $ just to have the same weak motor and poor gas mileage.