Well to address your stalling. I don't think it's an engine problem. I think you have a bad choke. If it runs ok when it warms up, then that's what it is. If you plan to hop this engine up, you will want to go to a 2 or 4 barrel, or several 2 barrels. Then you can forget about that problem.
Rant about the car itself & auto design in general...
Disclamer: The following is just my opinion. I am a Ford lover, but as an industrial designer, I have high standards for the aesthetic appearance of vehicles, appliances, furniture, buildings, etc.
However, I would hesitate to put any money into a car like a granada, a fairmont, a pinto or most any 1973 to 1990 American car that is not some limited production, high performance model,(like the Levis edition Gremlin). Daily driver, great. Steal parts for an older car, even better. But no amount of engine building on a Grenada with a six will increase it's value. I realize that for many, these are for driving, not investments. But someday you may want or need to sell the car & you will have like $2-3K into it & be able to sell it for $800. If you start with something that is more desireable & fix it up, you'll most likely get your money back out & definitely have less people asking why the hell you'd dump money into something with no value.
We love to trash talk Ricers. Well this is very similar. A ricer will buy a $2000 used Hyundai & dump $5k into wheels, tires, exhaust, suspension, neon crap & stereo trying to make an Acura out of it. Is it worth$7k? No. It is now worth about $1200. $7000 buys a pretty decent used car. I pass up tons of cool vinatge cars that, with a little TLC, could double my money & have a sweet ride in the mean time. You want a badass wagon? There's a totally restored 1968 Country Squire Woody Wagon in my neighborhood for sale. About $6k. 390. No mods necessary.
IMHO, with the exception of the Tbird, Ford (& most US autos) design went down the crapper by 1966. Bloated bodies with no interesting lines or details. Interiors went south in 1964. Plastic & fake wood, etc. Look at a '63 & '64 anything & see the difference in the details. 1966 was the last beautiful Tbird, 1970 was the last cool Tbird. 1972 was the end of true muscle cars.
Funny aside:
In 1978 high school drivers' ed, we had 2 kinds of cars we got to drive. Both were leftovers from a nearby dealership. Ford Fairmont 4 door sedans with whatever the smallest engine available was. Couldn't get the stupid things up to highway speed (which was only 55 then). Sorriest pieces of crap I ever drove & they were new. Our other cars? 2 Trans Ams with 6.6 liter engines. Holy crap! I almost got kicked out of class for doing burnouts & going way over the speed limit all the time. I was back in the Fairmonts in no time;-(.
I know I'm a snob about car design, but c'mon, Fairlane or Fairmont, What looks better? No contest. You know I'm right. Yes you do.
Flame away,
David K
1963 Comet Convertible