400 low buck dont give a

Run a mild cam. Factory stall converter. Get a manual valve body for the trans. 3.55 posi gears. You already have carb and intake. Sort out a basic clean flowing exhaust system. I suggest 2.5" straight pipes. Tear a$$ all over heck and back.
You can probably run friggin 87 octane too.

Lunati voodo 1400 - 5700 rpm

http://www.summitracing.com/parts/LUN-60302LK/

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