1997 5.9L Magnum Roots Supercharging and Fitment

I have a carburetor guy who all he does all day is rebuild and set up carbs, from singles to six packs etc so Im gonna have him tune it, I am not that good with performance tuning. I understand the crankshaft bit and may just take the plunge and get a forged bottom end. The car wont be a dedicated racer so Im hoping to get years of life from this thing, might as well do it right the first time. I appreciate all of your folks insight and experience.