I had this cam custom ground for someone and he backed out before I could cancel the order. The cam is new and ready to ship straight from Isky, so it will ship from Isky to you. Lobes are the new high torque Isky HRX series 127/133* @.200'' lobe lift( same area under the curve as the 212/218 comp low lift) but with a shorter 254/260* @.006'' so it will come off the bottom a little stronger and still have good top end. Ls6 springs will work for this cam, but I recomend the Isky, or PAC springs if RPM's go beyond 6K as the LS6 springs were desinged to control light weight Ls6 valves not heavy solid stemed truck valves. Im taking a loss on this cam first $345.00 gets it. J