Info from ElPolako at Industsrial Chassis:

"We have found that if you use the BellTech spindles, you are limited to the stock Dakota rotors. The D-series truck rotors will hit the tie rod. BellTech has not only raised and shortened the steering arm, but now have moved it outboard. This has caused an interference issue, we have not had this issue with the spindles from Airbagit."

http://www.industrialchassisinc.com/?page_id=281

Greg