Post dissecting is annoying at best.

The original post made no mention of a 1-2 shift, and yet so many people are debating the subject. Remember guys, he mentioned that his GSR feels sluggish at low RPM compared to his old LS. That most definitely does not have to do with gearing.

Eclipse spanker, what you are looking for will not be solved by an ITR transmission. The 1-2 gap on the GSR trans is not that different from the ITR (or a G2 GSR) and if you want an LSD get a Quaife diff. Regardless, I would stick to getting i/h/e before you go out and drop almost 2 grand on an ITR box.