I would start calling salvage yards that specialize in European cars. I would bet that you will find one for under $1000, but it might take up to a month to find it. There should be some good yards in your area, in my area I always call Aurora Salvage in Seattle. I found a top pump for my '91 on ebay for $350. It can take a few months for the right part to come up on ebay, if you can wait that long ebay is a good option too. Good luck brother, and don't get discouraged by the dealers estimate.