Originally posted by SiR-DC2
Top speed on usdm ITR tranny = about 110 mph at best. GSR about 125mph, make sure you know what your getting into, difference between fast and quick. I have a friend who has a gutted teg ls and an r tranny, from a roll I think he'd take me but we raced from 70 + and I just WALKED him. Like everyone said, decide what you want and go from there.
I guess I missed it? Later you do mention your friend's LS with an R tranny. But you do not reference this combo in your first two sentences. You make a general statement that you assume the reader will tie together later on. It is best to clarify prior to such statements.
But that's all water under the bridge...
The R tranny, as SiR-DC2 has posted, is not the best combo for an LS due to the lower Rev Limiter of 6800 rpm, as compared to the higher reving GSR/R.