Don't know.

The 3100 would have come with a Rochester B with manual choke.

You now have a carburetor with an automatic choke.

If there is no place to attach the heat tube (generally on the exhaust manifold); one may fabricate a "heat stove" to use to supply heat to the automatic choke:

Heat stove fabrication

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop