I've been able to get 25 mpg out of a carbed, 3.73 geared mustang. How? Casual driving style, weight reduction (to the order of 400 lbs), underdrive pulleys, a good ignition system, good tuneup, and leaning the mixture a tad. Dont worry about nosediving your milage from a carbed car. _You_ are in charge of setting it up properly but it's not a big deal and you can get very comparable results to FI. If you do end up with a CFI monstrosity, toss the top and put a holley back on. You'll thank yourself once you start making changes to the car.
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91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior
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