Well you should be in the low 15's.
Here are some suggestions I have for you combo...
Ditch the 70mm TB it's WAY to big. Get a 65mm they are still good up to 500hp.
Get a set of E7 heads, your heads suck *** for flow. Port em too while your at it. Or you could pick up a set of GT-40P's. They are $630 from Central Coast Mustang, that includes a stage 1 port, stainless valves, and springs good to .570 lift.
You can get a explorer intake for $275 new from Central Coast Mustang, it only flows 10cfm less than a Cobra. You might as well get that ported too.
You need a stall BAD, I suggest a 2800-3000.
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1987 Buick T-type
1998 HD Electra Elide
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