Overdrive options

I'm not sure what the others offer but it drops the .78 to 1 ratio of the GVOD unit is lifechanging. I mean, the first time you run 4.56's down the interstate your mindset on everything changes. You'll never be without an OD again.
Yup, try running 4.86 on the interstate, people just look at you in disbelief as they go by because it sounds like your doing 120