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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
You can use several types. I had 3" Rough Country spindles on mine at one point. You can go to www.airbagit.com and find some there also as well as Ebay.
unless you have factory 17's. then, in that case, you must have 4.5" of backspacing for the rims to clear the new spindles.
Exactly, and if I'm not mistaken not even the factory 20's have that much backspacing. If you're gonna run the factory rim you just need to get a set of spacers.
the 20" wheels will clear them. the lift spindle is longer than stock, and rides inside the rim. so the diameter of a 17" is not enough. but the diameter of the 20" rim is big enough to allow the spindle to fit inside. with aftermarket wheels with the correct back spacing, it pushes the rim out so that the spindle does not sit inside the rim.