the tubes are sleeved with cromolly sleeves . I beleive they are from Synergy as well. And the gearing is 5.38s with my 6 speed manual trans. Tonka still has stock axles at the moment and she has broke the rear ones one time . which has bin replaced and is all brand new now. Its only a 3.5 lift on her so I have a tom woods front shaft and the rear is stock as of now. she has alot of get up and go with this setup but it would be nice to add some trussing to beaf up the rears and get some axles too.