Why'd you buy a 2-bbl carb? If you were going to spend the money on a new carb, and wanted to improve performance, why didn't you buy a 4-bbl? A 4-bbl is very, very necessary for making that engine run good.
Anyways....the heads on that engine are good stock. Huge valves....something like 2.02/1.71...something like that.....You might want to get them ported/polished. You need an aluminum intake (4-bbl!!!) with at least a 650 carb (4-bbl!!!!), a decent sized cam. You will need gears to get off the line, and a stall converter if there's money left over.
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Previously "BennyBoy"
'69 Coupe with 351W-I rolled it 8/8
Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads