Actually, I have a 95 Vision TSi, and my timing belt slipped about 2 years ago, the water pump was leaking onto the tension pulley and caused it to fail, thus loosing tension on the belt. It happened as I was driving about 25 miles per hour.
All the research I did told me the 95 3.5 was NOT an interference engine, but the 94 was.
Anyway, I purchased a kit that had the belt, water pump and pulley together for about 130 dollars. did the repair myself and saved a ton of money.