I personally would start in the front, if you can't get the weight tranfer the car will never get good traction, 90/10s and six cyl bars you can get at a boneyard for cheap is definaly the cheapest thing to do. I have raced mopars from the late 70s with no money and over the years have found the cheapest ways to go faster. 4.88 gears will get your rpm high in high gear, don't want to go through the traps in second gear. do the convertor last you need to have the car close to benifit from the right convertor, there expensive you don't want to get the wrong one.