BITD RULEBOOK
UTV-15 ENGINE LOCATION AND DISPLACEMENT: For all UTV classes the Maximum engine displacement is 1000cc. Pro Production class UTVs must use stock engine cases and cylinder head. Note, the engine update rule will start to be effective January 1 2016. Engine updates are allowed, as long as the frame and suspension mounting points match the updated engine. This engine update rule is effective January 1 2016.
Seems like this verbiage indicates any production engine could be dropped into any production car that has the same engine and suspension mounting points. According to this, wouldn't kornfed be in the clear? Feel free to elaborate....