One generally buys a Fish carburetor for one of the following reasons:

1) You are restoring a documented NASCAR Hudson from the early 1950's for display in a museum.

2) You own a restarant in NASCAR country and wish to cover the walls with early NASCAR memorabilia.

3) You own a carburetor museum, and wish to display one of each brand of carburetor.

4) You are writing an article on aftermarket carburetors, and wish to take a picture for the article.

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