If you go to www.twinturbo.net there is a FAQ section with many explanations of how to diagnose problems and perform many maint. items.
One of the best people to buy from is a guy names Coz. He owns www.czp.us
Give him a ring and he’ll recommend all the stuff you’ll need for the 60k :tup:
The only 2 places I buy parts from are CZP (the link above) and www.splparts.com
I’ve never had a problem with either of them and I’ve been buying from them for over 6 years now :tup: