I'm gonna recommend replacement heads pre-assembled in this case. Check ebay for rebuilt parts (probably from Odessa) or local junkyards for used ones.
I'd seriously wanna know why valves are bad on an 04. Run with no exhaust? High miles?
All over in Explorers. Not so much Rangers, but; maybe you'll get lucky. The Explorer swap isn't hard if you wanna do it tho. I bought the Ruff Stuff simple swap kit But, just a new pair spring perches and u-bolts will do. You can even use the Explorer spring under plates for the shock mounts if...
I've had good luck cleaning engines by adding one less quart of oil and using ATF (Dexron/Mercon) for the last quart. Usually washes chunks out the drain plug. Will stop up a filter if you leave it too long tho. I drive it around 100 miles with the ATF in it.
Nah. The only website I had was my MySpace, GeoCities, Google Sites mash-up in about 8th 9th grade. I found that with a Google search.
I don't intend to get into anything too rough as I gotta drive it back home. So I'll probably be doing as much or more spectating than anything.