[jhv48]

I'm not a proponent of dyno tuning for cruise cycles. Every dyno chart I've seen begins at 3500 rpm. The best way to set your carb for cruise is to reduce the size of the primary main jet until the car starts to buck when cruising at a steady speed on a flat surface in third gear. Say 2500 rpm. Then raise the jet size until it cruises comfortably at that speed. The bucking indicates a lean condition. Then take it for a cruise and check your plugs. That's about as close as you can get without using a Wideband.
Tune wot on a dyno!