Cannot decide on project direction 73 Duster 340

Your money, time, and car. Make it what it takes to make you smile..... :)
I've owned one "H" code car in my life, '69 cuda 4 speed. I sold it. All my other A-bodies were (are) /6 or 318 cars. Then, you never have a fret over building a car the way you want it to be.