This is my first build and have gotten a great amount of advice on here. My 86 MCSS frame is away getting blasted and powder coated and i would like to have he rear end ready to put it all together asap. My engine will be a stroked 6.0 (eventually on boost) and very possibly a 4l80 (this is what my research is telling me is best fit). MY goal is to street and drag occasionally. I was looking at the ford 9" but not sure what gear ratio to go with. any help is much appreciated.