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If I understand you correctly, a 1.5" tall spacer will give you almost 3" of lift (due to pivoting), and shackles that are 2.5" longer than stock will give you 1.25" of lift in the rear (once again as a result of pivoting), so 33's should fit easy in the front, but not so easy in the rear.


I assume this is a ball joint spacer ('86/IFS) so lift should be 1:1, it just lowers the spindle 1.5", giving 1.5" of lift. Rear tire fitment is usually much easier, wheel well opening is plenty big for 33s and since they stay straight ahead, you don't have the steering issues like you do up front.