Well before zilvia does...well, what zilvia does. Yes, you are correct. Full Race no longer makes their bottom mount manifold. You can try to post in the WTB section in the marketplace, but chances are going to be slim. A lot of guys run Tomei expreme exhaust manifolds (myself included), without any real issues. There are some other brands out there if you don't want to run ISR, but pickings are a little slim nowadays. If you asked 10-15 years ago, you'd have plenty of options, but once LS' and 1J/2J's took over, the SR market was pushed to the side.
Good luck in you search
