[logixrat]

Dealers around here only charge $375 for the changing the timing belt. I wonder if they anticipate damage since you waited until 146k to change it, and hence the high quote.

In regards to the vibration, it probably sounds like metal on metal and is coming from under the drivers seat. Crawl underneat (after the vehicle has cooled) and check out the exhaust pipe & heat shield. They have a tendancy to break/loosen. A couple of $.50 hose clamps fixed our problem!