Id say the later Tecumseh 4 stroke carb would work pretty easy, right down to the air cleaner mount.
Looking at the pictures they are dead ringers.
Just need the one with the adjustable main jet.
Theres an early and a late TVS90 carb too. Most i get have had water or ethanol in them and the carbs need a clean out. Ive struck the two different sized holes for the carb bowls.
The linkages would go close to working too. Well linkage. Id say that the one closest the air cleaner in that carb is the choke.
I would assume that carb has a fixed hole jet/bowl bolt and the screw up the side is the mixture.
Having the rubber primer bulb on the side would ruin the look somewhat. But it could see it running while you are looking.
Cheers, Bob.
