There is a set of the gills on e-bay:
http://cgi.ebay.com/ebaymotors/pantera-left-and-right-g...QQrdZ1QQcmdZViewItem
I sold a pair a few months ago that needed some repairing for $117. The L model gills (with the fuel door) sell for considerably more. Some of the vendors sell replacements too.
Good luck,
John
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