Just bought a 2007.5 lmm from a friend of mine. The truck has 179k on the clock and seems to run well. It has a full 5in exhaust, fully deleted with an lb7 down pipe, s&b cold air, and Idaho rob efi live with dsp 5. I currently have it in the shop repairing a slip yoke leak and having a fass 165 installed. I have big plans for it in the near future. Should I be concerned that it has been run for this long without a lift pump? Seems to run really well and I have extensive maintenance history on it. Super stoked to own the truck and have worked hard for it just want to keep it running strong 💪.