I ran this combo (offy+fenton) on my '50 1-Ton for 20,000 miles, several thousand with rochester B. and the rest with the carters.
I didn't notice any real seat of the pants power difference, when you consider that as you put your foot down, the throttle opens twice as fast. A 1-Ton that's always carrying a load is really a rocketship.
What I did notice though, was a SLIGHT improvement in fuel economy, about 2 mpg or so.
Where it really made a difference was at idle. I was able to get a much, smoother and slower idle. I really liked hearing that engine tick over.
It also looked really nice under the hood, and I liked that too!!!!!
