Assuming I googled the right one, the Hyundai looks to be a Honda GX clone. Honda don't make a 212cc version but otherwise it looks awful close. Anyway, the GC engine you have may or may not be similar in size, and the new engine has to physically fit. Also it doesn't want to be much heavier. I specialise in Merry Tillers and the Majors with 5hp B & S engines feel much clumsier than the otherwise identical 3hp B & S engined Majors. If you do go for the Hyundai, make sure the crankshaft is the right diameter. Honda GXs are available with taper cranks and 5/8" dia, 3/4" dia, 20mm dia, etc, straight cranks. So I expect the Hyundais will be too.