I had a similar combo in my Dart ages ago. 3.23's but with a 26" tire.

Ran 15.4 with cast manifolds, RV cam, 4bbl iron intake and a 600 holley.
Ran 14.0 with headers, LD340, and summit .441 cam

Later ran high 12's with home ported heads, XE268, and higher compression.
Ran 12.16 @ 116 with a .047 pill in a plate

I would hold off on gears if you actually plan to drive it, and suggest the following, not necessarily in order:

intake
head work
N2O/Ebay turbo

As for now...9.80 in the 1/8