there are already oil scrapers and windage trays made for the KA.

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theyre not that great though, quality is iffy.

i was always under impression KA motors' cranks do not sit below the oil level anyways, so the need for knife edging and windage trays isnt required. crank scraper will always make a difference as the oil dripping down from the pistons squirters gets flung around and foamed up, and scraping that off the crank will help...but will it be noticable?

people are making 700+ on stock cranks, with nothing more than polishing for bearings and balancing. so unless you want 500 or more, i say its a waste of money.