Just get the bandit ones they will be fine, although piston size much larger on pinto(than bike) air speed is also a lot slower due to lower revs.
40's/45's are normally used at a maximum of 80% choke to body size, that is what I had on my yamaha engine celica.
Carbs are like dinosaurs compared with throttle bodies off bikes as these are fuel injected, just no comparison.
Though you will have to buy another ecu to run them(and ignition), unless you have one of the three maps for the escort and others for cossie, then just swap ecu from one car to another and flick map switch.
tabetha