Just wanted to say hello and how nice it was to find a web site with so much information! Some of the other web site seem to really downplay the value of the P38A which is discourageing to say the least. Just bought a 99 4.0 w/ a few issues so will be checking back from time to time to see what I can learn. My "new" truck has approximately 138k on the clock and will be used as a Home Depot and weekend vehicle with the occasional trip offroad. First exercise will be to replace the thermostat as I was told by the previous owner that it has overheated before. I drove the truck quite a bit this weekend and the temp never raised above 1/2 way on the gauge but figured it would be better to be safe than sorry.