You can by the conversion kit from Summit, or pretty much anyone else that sells Edelbrock carbs, I got my carb from AutoZone... I don't think either choke will make much a difference in performance once the car is warmed up, I may be wrong though.
-Jason
'72 Mach 1 || '90 Talon TSi AWD
http://nosaj122081.tripod.com/parade3.jpg
"Thats not a leak, my car's marking its territory!"
"If you've done it, it ain't braggin'." -Roy Rogers