I have a 1991 Ramcharger, 318, fuel injected, 2wd, 4 speed overdrive trans. I want to improve the performance (Horsepower, Handling, etc...). I am having trouble finding performance parts such as computer upgrade, intake manifold, transmission upgrades or anything of the like. I am wanting to end up with a street/highway machine not a quarter mile racer. Any information would be greatly appreciated.