Making power out of the 318
combo dependent, but a 625 carter (edelbrock) afb/avs covers a lot of territory. and dead simple to set up. cheap, reliable, abundant. works out of the box.
holley 1850 600 cfm. vac 2ndary, slam it on and go.
holley 3310-2(thru~6) for a 750 with metering blocks on the 2ndary and down leg boosters if you wanna get wild.
but again, combo dependent. if you're building a scoot around street cruiser for stop light eliminator saturday night action (read: compression, cam, stall, gears) then a 750dp is a perfectly cromulent choice.