340 max camshaft with exhaust manifolds

Call Racer Brown or any decent cam Co. There are a lot of tried and true as well as custom solid cams that don't make it into a catalog

I’m guessing you’ll run a gear ratio to suite the cam then?
Same with a converter? Or is this a 4spd manual?
(Sorry for asking… just wanna be clear.)
What does the car weigh and what exact car is this?
Tire size to be determined?

The MoPar 6 pack rated on a 2bbl. draw is 1250 cfm.
Converted to a 4bbl. draw, it’s 955 cfm.

You’re listed .500 lift, is this where the stock heads flow rate stops increasing? What heads and valve sizes? Any porting work?
72 dart. Gear rations 3.55/3.91/4.30 are at hand. spread-bore intake 800 cfm. 26" is an easy option. 28 might be a little tight.