...340/360 exhaust manifolds, 2 1/2" dual pipes, mildly ported 596 heads, custom cam with 2.02/1.6 valves, 3 angle valve job, gasket matched. The 2004R should give me a really good bottom end (probably 4:10/4:55 first gear ratio) with the lower 2004R first gear and the overdrive will keep the...