There was one legal one out there but when the gentleman who made them became ill production stopped.
Stoney (NATA) is selling copies of them but without the STC so you will have to get your own field approval for them.
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To donate to the PV-2D project via PayPal click here
http://www.twinbeech.com/84062restoration.htmWe brought her from:

to this in 3 months:

Help us get her all the way back

All donations are tax deductible as the Stockton Field Aviation Museum is a 501c3 nonprofit organization. Tell a friend as the Harpoon needs all the help she can get.
Thank you!
Taigh Ramey
Vintage Aircraft, Stockton, California
http://www.twinbeech.com'KEEP ‘EM FLYING…FOR HISTORY!'