Thank you all - another question:
All gauges and the speedo are original and were working when the truck last ran 4 years ago. However, I'd hate to have to pull back apart at a later date. Upside to replacing gauges would be to minimize this risk, downside is cost and the fact that the repos aren't quite the same. I am leaning towards keeping the old gauges and have scanned the site for ways to test them...found help on all but oil pressure gauge - any way to test it?
