Predator 670
This engine is gaining popularity recently. We have seen several companies making speed parts for them. Check with our sponsors to see if they are offering any kits with this engine in mind.
Since it's newer to the market, not as much reliability and durability info is available. The 670 is rumored to be a good powerplant with plenty of power, with 670cc of displacement. On a good note, the 670 does come with a muffler so you won't have to purchase one separately, like with some of the Briggs Vanguards.
Some of the members here have used them with good reports, although I have read about a few problems as well. Do a search here and read the threads about it to make your determination if it's for you.
Details and specs can be seen here
https://www.harborfreight.com/22-hp-...epa-61614.html