What carb. should I buy?

Yeah, like jewelry and performs right out of the box. Only screw i turned was the throttle screw about a 1/4 turn to idle faster. Later i had a lean transition that i cleaned up with different T slot jet. No big deal. Everyone has a different combo and will require a turn of the throttle screw or mixture screws or perhaps jets. Dom gets them right on or atleast very close.
Do mine w/ a hand held-lol Still adjusting things tho, guess I need more timing, have ran it a little slow coming in because of the 91 octane lawn mower gas , guess I was wrong about my calculations , " Better known as "wild guess!"