Do a search. Some people get the HR's to work just fine, some people don't I was just warning you. You can spend hours reading the countless cam threads.
+1. The older version of the TPS sensor was plastic on the inside and would get eaten out. The newer ones are metal. When my TPS sensor went out it would not idle, and if it would it would only be fore a second.
Nice ride.
Just an FYI, criminals love that headunit so watch were you park your car. I used to have the same one until they broke into my car breaking my driver side window and stole it. My driver's side window still doesn't close all the way.
Shaftmasters 3.5" are $599. Their v6 one is $499, I'm not sure why their is such a big price difference.
http://www.shaftmasters.com/3aldrfomu20v4.html
I have one and love it.
What are your goals?
IMHO, find yourself a nice set of NSR cams (~$700) get an email tune and run that motor to the ground. No sense in tearing into the engine just yet because it sounds like this is your DD. NSR cams arn't that expensive to get installed b/c they don't require a spring change...