My BIG problem is my LS has a 460 engine - we have bought 2 Haynes Auto Repair manuals that supposedly include our LS, but we need to change the valve covers and o rings, and nothing has info on a 460! We discovered it is a 460 from the VIN code. Any help? Love my car! Lots of get up and go! but... valve covers leak and have a nasty smell, and I suppose could start a fire?