help with 4000quattro

[greg rich]

Hi, new to the list and I just bought my first 4000 (owned two 5000 before).
Hopefully you guys could answer some questions (some are basic)

1. What wheels are shared with this car-I've read 4X108 bolt pattern?-
Different sizes available?
2. Front balljoints shared with other models?
3. Starter interchangable with another model? (standard)
4. Drivetrain vibration at highway speeds (50 mph)-hanger bearing?
5. Lights for diff locks not lighting when engaged-any thoughts as to 		  
diagnosis/test quattro system?
6. Raer calpiers same as VW or 5000 model?
7. Hazard light switch inop but turn signals work
8. Approx RPM'S at 60 mph (to test tach reading)
9. Source for cheap brake rotors/calipers/master
10. Is it hard to replace master cylinder with clutch hydraulice right below
it-I don't want to have to mess with the clutch system!

I bought this car from a VW dealer for $300 CDN so it is a cheap car. It is
not my first quattro but I've never had to diagnose the system before, any
help would be appreciated! It runs like a champ even after sitting for 13
months without having run once! The brakes are gone and a good vibration on
the highway too (feels like a driveshaft?). Exhaust somehow survived and good
tires! It is a really clean car and I want to keep at least through the
winter.
Greg

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