Do yourself a favor and stay away from an SVX that has not had the tranny replaced recently. I have worked in a Subaru dealership for the past eight years, and while I love Subarus, the SVX is a disaster. I have never seen an SVX, any model year 1992 - 1997, with more than 120,000 miles on it with an original tranny. We've even seen many of these trannys failing at less that 60,000 miles. The output shaft on the trans was the exact same output shaft that Subaru had used in the old GL-10 Loyale turbos. The vehicle is just too heavy and has too much power for the tranny and shaft to handle.
Other than the transmission problems they are pretty descent rigs. Just be aware that parts for SVX's are rather expensive and in VERY short supply.