Best shot might be the Salvage companies, if they do not you can put an alert on a part and get notified if they get one.
Auto Atlanta
DC Automotive
And post on all the Porsche forums you can find... which you probably have done...

Good luck
1983 928S - 16v 4.7L L-Jetronic
Slate Blue Metallic w/ Blue Leather
85/86 exhaust manifolds
Y-Pipe
SS Hi-perf Cat
S4 springs
Bilstein shocks
Air pump delete
VIN: WP0JB0926DS861180
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