Come on man, you gotta get some way better heads than that. If you insisted on using stock 351W heads get 1969 heads, and port/polish the hell outta them. I really recommend getting some nice aluminum heads for that thing. 289s suck unless they can breathe. '74W heads have some smog crap don't they? That, IMHO, is the bottleneck. Get the slicks and your posi rebuilt. You'll get 13s just from that. With the heads....oh man....12s 12s 12s......
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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
Starting Project "2ND COMING": 1969 Fastback