Motorcraft 2100... kick-butt cheap carb upgrade.
Needs: used MC2100, adapter, air cleaner, rebuild kit... $75-$150
On a CJ you need vacuum to distributor, pcv to manifold vacuum, and probably breather to air cleaner... the rest can be junked.
Search for "Motorcraft swap" on google... there are at least 5 good write-ups. Also, ebay is probably the easiest place to find a carb if you don't have a good junkyard near you or don't have time to search yourself. Summit has the adapter and air cleaner, any auto parts place should have the rebuild kit, but you'll need to know what vehicle your used carb came off of as there seems to be MANY variations on the MC2100/2150 and you'll need a kit with the correct gaskets...
MC2100 is as good or better than the Weber (I've run both on the same jeep.. stuck with the MC2100).
'80 CJ7, 258 W/Autojuicer, MC 2100, TFI, SummitRacing CDI, MORE SRS, Moser 1-pc, YJ tub on 1" body lift, YJ family cage.