Welcome! For that price, Steve Haygood will become
..your new best friend. Call him first when you need parts. That's some high miles on there. Any chance the motor was rebuilt, or do you plan to do it yourself? They are mighty cars. BMW seems to have forgotten how to build a car with soul like the original M5. Keep her going, and I hope you don't have to spend $15k on up to drive her.
Bob K. 88 ///M5, RIP