By unfortunate coincidence a friend loaned his B&S powered splitter to someone and it came back with a shiny new HF Predator engine on it. The borrower had good intentions but my buddy never forgave him for getting rid of the B&S. I think I also fall into that old school group who would prefer an older poor running Briggs over a new Predator. This business of messing with someone elses equipment, particularly something he built himself can be risky. I'd sure check with the owner before surprising him with an "improvement." If you really want to say thanks, put a Honda on it.