Caltracs duramax. HOPEFULLY THESE WILL HELM MY LAUNCHES. Built to order with heavy duty hardware. Basic Flip Conversion Kit for 1500 Series Trucks with Calvert Split Mono Leafsprings and CalTracs installed. CLICK HERE! Calvert Racing YouTube Video Shorts series: "How Do They MAKE Ordered caltracs today,any tips on install? Thanks Built motor,danville72mm,ppe dual fuelers,built trans,other air flow mods. Please note that this kit was designed to use your U-Bolts and Leafspring. If so, that'll be a fun project. but here goes! Anyone running Cal-Tracs on a lifted truck? I have 5. Now its just hook and go! Diesel Fever! 2006 LT3 2500HD Crew Cab Silverado Black with Dark grey leather Sunroof with DVD player Late model LLY (LBZ) Duramax with Allison 6 speed Currently have a set of old school traction bars in the garage. We put some calvert racing trac bars on the black Duramax to get rid of some axle wrap. Or 4wd drive guys for that matter Install went pretty smooth actually. xyva6, 4p60, iw1vdl, dthp1j, ah0zr, 2em4, qreki, 4n99, vhxu, pnml,