The 2000 Conbra R is supposed to be the best, followed by 2003-04 Cobra. But, good luck finding any of that stuff in usable condition for cheap. I just bought aused 2000 rack from the autoparts store. Figured it was better (due to the internal design) than the fox, so any improvement was better than what I had. Yes, pressures can vary and the rack seems to be able to handle most in the range. I bought the rod ends from MM, but circle track stores will likely be cheaper. The Fox rack has standard inner tie rods, and the 1994 and newer racks have metric inner tie rods that at 3/4" longer per side. Get whichever you want, they are interchangeable, and then buy rod ends to suit your needs. Sounds like fun!