Make sure the cooling system is fully serviced (I use the Pink new type anti-freeze for Land Rovers, skip the Dexcool crap). Use high zinc oil and a Ford V-8 filter (like an HP-1 or PH-8A type - this type but skip actually using the cheap FRAM) they're a bit bigger and cost the same. De-rust and rust treat the frame inside and out, especially the rear quarter of it. Check, clean, and tighten all the grounds you can find (I use metallic anti-seize on all grounds to prevent corrosionn and aid conductivity) If unsure about past maintenence change all the fluids. I just picked up an '03 HSE a couple months ago, this is where I started. A Hawkeye Pro took me to some other places, so a Scan Tool is pretty handy also. Say three hail Mary's and you're on your way...