I would say 30% and also keep in mind if you ever go to sell it, even with the discount it can take longer to sell. You can't get a loan on a car with salvage history, at least not from most banks or credit unions and surprisingly, many guys do finance their Porsche.
As long as you go into it with eyes wide open you'll be fine, it's the guys who think they are the smartest guy in the world when they buy the car at such a discount but then when they go to sell get amnesia about the discount.
My 993 has salvage history from 2005, don't know for what, old Carfax, no real info, but it will follow the car, but I don't usually look at the title when I'm driving so it doesn't really bother me.
---Adam
