if I can make some suggestions.

1. get a good flowing exhaust system. any other upgrades will be complemented by the exhaust.$300+

2.headers. for both good sound and flow.$350+

3. upgrade factory ignition to something like an MSD distributor ,coil, wires. along with a good set of plugs
$400+

4. crane cams Energizer Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .484''/.484''
Duration: 272°/272°
RPM Range: 2000-5000
$120+
and dont forget a good timing set, and any head work, that will make more power and keep the engine mostly stock.

5. aluminum intake manifold. edelbrock or holley $145+

6. carb, fuel pump will run $250+

if you are interrested I can give you part numbers and more details on the suggested upgrades I have mentioned.