Some rookie questions

Concur that first things are to determine how much money you have to put into this thing & what are the measures of performance? Recommend you find a copy of the Mopar Six Cylinder Performance book. This book will walk you through what it takes to get to particular E.T. benchmarks.

Besides the SuperSix conversion, a shift improvement kit, and a lower rear axle ratio will produce results you can feel. Changing the rear gear will be the most effective but will also be the most detrimental to fuel economy.