Where to buy Exhaust manifolds 8.1 Horizon 2002

[Bertram38]

Where can I get the best price on some new manifolds for a buddies Searay.
It has 8.1 horizons. Port # omo27900, star # omo27885.
I looked at sterndrive.com and got 478.91 per manifold. There is someone out there with a better price I hope. I need 4 manifolds, or 2 lefty, and two righty.
B38:driving:

 

[Raylar]

Those prices for a true Mercury 8.1L 496 exhaust manifolds new don't seem that bad if they are the price for the correct part.
Any aftermarket exhaust that will properly fit and accept all the brackets, fitting, asscessories etc. will be more costly per engine and they will take a lot more labor to modify to fit and install.

Best Regards,
Ray @ Raylar