since everyone is talking about shocks and gear diffs, here are some things I have been working on.
I didn't drill out the TRF caps, I machined down the Xray tops a little. I also run TRF bladders. One thing to consider is that TRF's are longer and at ride height, are more compressed than Xray shocks. As discussed in the HB Cyclone thread, this does seem to take some grip away.
As for the diff, you just can't come close to the quality of the NT1 diffs. Spec R's don't even come close. Now that I have mine done just watch Xray release theirs and make all the time it took a waste.