Newbie w/ 72 Dart Swinger

Been cruising this forum for a while, lots of good information, and people. I now have a 1972 Dart, that I am currently working on. New to the Mopar V-8 area. Previously played with FWD Mopars, (2.2 turbos).

Have alway had a love for Mopars, first exposure was my parents 1968 Plymouth RR, they bought new in 68.

The Dart has plans to be a 2-3 times a month track duty and street car. Looking for a consistant mid to low 12's car.

Engine and trans pulled to clean and paint engine compartment and engine. Rebuild trans, 904 and new convertor.

How close to my idea quarter times do you think it will be? What would you recomend to get there?

Specs:
1972 360 .030 over KB 107 flat top pistons(comp 10-1)
Stock heads, with Comp XE 268 H-10 cam
Headman headers
Air gap intake w/ 670 Holly
MSD ignition
Convertor ? (stock for now, going to upgrade 2500 to 3000)
355 posi rear
Will be using the biggest track tire I can use 255 ? on 15 " rims

Thanks, Greg