looking for a cylinder head for my 93 gs500e. one of the seats for the exhaust valve broke up.

How did you break a seat ?
Broke a valve ?
Anyway, I'd do a rebuild job on the head ... I've done it with one of my local machine shops and have had good results.
They were a 100 bucks with reusing all stick parts, you buy new valves, they could put those in ... but if a seat is broken, I think its beyond service. You show me a pic I'll tell you.
Cool.
Buddha.