I own a precious 1988 Jeep Grand Wagoneer. About a month ago, I noticed low oil pressure readings (hot and cold) and a tapping valve-like sound. Noise got dreadfully louder and NO OIL PRESSURE READING!!Yeah, I know now and all you JGW owners probably do too! Timing cover is worn, oil pump and gear has to be replaced with new parts. After two weeks of searching auto part suppliers ALL OVER the internet, I finally think i might have found the parts. External type oil pump with NEW timing cover for AMC 360 V-8. What a mess. Still haven't nailed these parts down, yet. Now, cam shaft, bearings, valves and perhaps lifters need to be replaced due to wear and tear from lack of oil pressure. I NEED ADVICE. New parts? Used parts? what brand name? Any special tweaking recommendations? Upgrade to performance parts? Will the crank shaft need to be lookkkked at, too?? Help!!! !! I've had my Jeep for 6 years. A few odd and end maintenace jobs, but nothing like this...