Toyvo:
Your truck, I'm betting, came with a single Carter W-1 Carburetor. The W-1 is a single barrel, cast iron behemoth that is easy to work on and works very well.
If your dash knobs are stock, there will be a C on one and a T on the other. (I think that the Choke is on the right-hand side) Aside from the fact that they are labeled differently, they're pretty much exactly indentical.
Some time in past forty-two years, the choke knob got snapped off in mine, and the throttle was pressed into use as a choke.
A period correct engine is great if you are taking it back to "Bone Stock" and want to be as accurate as possible -- or are just that anal retentive. It's not a waste of time if that is your goal. If you ever DO sell it, a "Numbers Matching" rig can demand a slightly higher price than one that isn't.
I am running a 1949 216 from a car in mine. It's what it came with, and it had just been rebuilt about 200 miles before it was parked. It's staying because I don't care to have it "bone stock", I just want it to be "mostly stock". It's the same basic engine as what was in there originally, and that's close enough for me.
The Full Pressure 235 is a good engine, and if you don't care about the engine being period correct, I'd leave it.
Buy the 216 and keep it as backup, though. It never hurts to have a spare.
