The donor car is a 1975 Porsche 914 4-cylinder. I found an ad for it online - it was located in Colorado Springs, about 120 miles from my home. I flew down, took a test drive, then bought it and drove it home (quite an act of faith in retrospect!). I did look at the typical rust spots - the "hell hole" below the battery mount, the longitudinals, etc. - and did see a little rust. But not enough to worry about (or so I thought...). And, yes, it was very purple.