I gave it thought myself. A carbed car will typically pull more top end(rpm range) then FI, but the FI should get it downlow. The FI is better all around, unless you really know what your doing with a carb/tuning it.
I may change to a carb down the road, once my car is basically track only, and maybe an occasional street drive, unless my FI settup works out fantastically.
Things that need to be changed to go carbed - Distributer, new fuel line (bigger), new carb fuel pump, sump the gas tank, wire up an ignition switch, buy a carb/lower intake of course, gut the wireing/computer out. When you weigh the cost of an all around good EFI settup (With chip or tuner device) versus doing a carb right, they are pretty damn close in cost. If you already have a complete aftermarket efi settup then you will lose serious money selling it and buying a new carbed settup.
Just so you guys know, when you pull the computer/harness out, the headlights and everything will still work. You do need an ignition switch, and something to trigger the fuel pump. I cant think of any other sensors/relays you would need?
Seeing a friend of a friends foxbody go 10.6's @127 n/a with a carbed 408 w/afr's had me thinking

But i already have the full EFI settup, so i might as well give it a try.