Oh, and in case you didn't realize it....
WELCOME TO THE SITE!!!!
Please do not think that this site is just a bunch of dummies posting about stuff they don't know. This is the real deal--the true experts. Read what they advise you to read, do what they suggest, and report back what you you see/hear. Ignore the guys at the corner garage--they probably don't have the base of experience that is present here ( Unless your corner garage is Conestoga Diesel!) You'll hear guys tell you they can time your IP by ear--do not believe them. I only say that to emphasize to believe what is posted here. If someone does post some bad information it gets corrected pretty quickly.
If you pay attention, you will become knowledgeable and the owner of a sweet running IDI turbo. Be patient, dealing with Previous Owner's problems may take a while to sort out.
Again, Welcome to the site!