You'll find that the cruising speed in a hotrod or custom with 3 deuces is a lot less than your daily driver with FI. Considering the amount of fuel those 3 babies can swallow, you'll be wanting to keep your foot out of it as much as possible.

I normally cruise to work in my daily driver at 80+ mph. In my 3 deuce car, not a small block, I usually cruise at 55 to 65. If I have to stomp on it I can actually see the gas guage drop. Not a pretty picture, especially not with gas at $3/gallom and mileage at 8 mpg at cruising speed. My outbound carbs usually kick in at about 75, anything faster would be in a stroke range.