I've never actually measured to see how "level" the rocker was. I usaully just make sure the wheel openings are all the same height. With that being said, I built the crossmember today(will post pics in my build thread), and used the energy suspension poly mount. I went ahead and measured the rockers to zero(level) and set the drive train at 4. I figure it will sag to 5 ant I can use the shim to put it back to three. As far as spring wrap, I think I'm going with the cat 5 spings. So hopefully spring wrap will not bee too much of an issue. Fir oil control, I'm using the aurocraft pan