Michael - give me a call at 573-392-7378 (9-4 Mon-Wed central time). Will be happy to discuss (pro's and con's) of replacements by Carter, Stromberg, and Zenith (Tillotson also made a replacement, as did the Borg/Warner group; but cannot recommend these).

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