That's a lot of work, and wouldn't be emissions legal. You'll need to eliminate the computer, which may require a different transmission if you can't buy a stand alone computer for it.
Also, the torker 2 isn't a good choice. A dual plane manifold such as the performer would be better.
a webber, is a type of holley carburetor.
Holley 4180
There is no reason you would have to.
holley 4150 c
You will need an adapter to coveg the EGR crossover.
Yes, it's the Holley 1940. You can get them from Champion Carburetor.
I would recommend finding some carburetor books to read. People have made careers out of this question and it cannot be answered in a few sentences or paragraphs. "Holley Carburetors & Manifolds" published by HP Books is a good place to start. Kyrasis6 Mazdatruckin.com
A small one with vacuum secondaries.
that was supposed to be 11:1 compression
Very little, if any at all. The carburetor is not what makes the horse power, The rotateing system and Valve train is what makes HP.
The Holley website has an interactive carburetor selector (see related link). Holley doesn't make just one product, as there were several engines made without Electronic Fuel Injection - thus, they make a range of products for different engines.
If you do have a 351 cu. in. go with a Holley replacement, and even look at a throttle body, and if you have a few extra bucks, check for the port injection from Holley.