Hi "I hope not",
That'll be a massive engine on a 14 inch machine, actually overkill. It would be more suited to a 17 or 20 inch Scotty.
What's wrong with the current Briggs that's sitting on it ?
BTW that cutter chain adjuster is no longer available and can only be substituted with the series 2 black plastic unit that will require the slot filing out so that it fits in place with a washer and the original nut back on the stud.
Cheers,
BB.