i started off with 5" all pro's with my axle pushed forward a bit. runin 37s and its still too tall so i took 2 leafs out. it sits about 1.5-2 inches lower wich is perfect i think but now im bending them. i think 4" springs would be great for 37s my buddy has 3" spring on 37s with no problems. im also all about LCOG
