Need Advice on Low(er) Budget Race Build

Many years ago, I picked up a Duster roller,already tubbed with 1 3/4 fenderwell headers and I had a bunch of "stocker" 440 six-pack stuff laying around, .020 over stock cast pistons, stock rods, stock crank, stock blueprinted 906 heads and used a stock cheater hydraulic stock lift Cam Dynamics cam, 727, tm7 intake and 850 d.p., a T.A. 069J converter 4.56 gear 12x31 slick and ran 11.00's to 11.10's . Actually once it got in the 10's on a cool October night ,like high 10.90's. 3000 lbs with me in it. Very cheap engine back then, but could duplicate it now for about that much. I read a Mopar magazine back then where one of the left coast guru's built a 10 sec 440 duster using a 509 cam and I was intrigued enough to try it.