I don't know your situation, but it is HIGHLY UNLIKELY that you will be able to fix all the problems that the fire caused. The fire sounds like it was intense. this will make any repairs highly suspect and very expensive. Having said that, if you are dead set for rebuild, you might get a total front end from a junk yard. have them torch the front right off (frame and all). Then you can take all the parts off and put on yours.
the choke is sticking, have it repaired
It does not have a carburetor.
I't doesnt have a carb. All Chevy truck engines starting in 1987 are fuel injected and aren't able to be adjusted. They are computer controlled and don't need adjustment
A Briggs and Stratton L head twin engine wills pit gas out of the carburetor and flood out when starting if the diaphragm has been damaged. This will cause excessive fuel to enter the carburetor.
The fuel is not getting from the tank to the carburetor.
Timing is backwards turn distributor 180*
Rebuilding much of Europe and starting the United Nations.
A 1994 Dodge Ram has no carburetor, it is fuel injected. You can quirt starter fluid in the air intake.
Directly into the carburetor throat (remove air cleaner).
Carburetor jets don't usually get worn, they get clogged. And the signs are hard starting, sputtering, and slow acceleration. A carb rebuild is usually the best solution.