Greetings Jeremy & all; My $.03 cents. I would start by looking everywhere including the Internet for a 83 Q-Jet. Amusing that the car did have a 4V (barrel) carb from the factory? This will make your life much easer as it will have jets, rods, rod spring & internal tune that may be close to OE (Original Equipment) spec. of your engine? If you prefer look for a re-manufactured unit for a early- mid 70's 307 Olds, 305 Chevy or 301 Pontiac. The reason I suggest this path is any changes you make in the future will require changes to the carb. And this vintage Q-Jet carb will allow you to do those chances with relative ease. A cheap Edelbrock- AFB is less suitable & a Holley this point in time wouldn't suite your needs. A couple of tips, Holley's are the oldest & newest design and are best suited for wide open throttle delivering equal or near equal flow to all cylinders ( max Performance). AFB - Edelbrock's are the next oldest design & the secondary's are a pain in the A_s to tune. Later more expensive Edelbrock's were modernized some & lend themselves to tuning the secondary. If ya thing about the history Q-Jets they are just a more modern AFB & most from the late 60's to about 1976 are easer to adjust & tune to any engine cam combo. Holley's are the easiest to tune & adjust & of course come in many different sizes. The down side of the Holley is they don't use as many different metering points at off idle & light cruse, hence they generally won't get as good of fuel mileage. As custom fine tuning is best done by messing with the "Main Power bleeds", the "Idle feed restrictors" & "Idle air bleeds" Of course you can ruin Holley in a blink if you drill the fixed bleeds. That's why you see so many Holley's with adjustable bleeds now days. It's possible to dial one in to work nearly as well as fuel injection?? Hope I helped, Ole' Bob