Any more news about this?
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Not that I know of . . I actually called him before I posted because I and some of my friends were interested in some things.
If I remember correctly, a custom one off aluminum arm is around $1200.00 . . If you buy 10 of them they will be around $700.00 each or slightly less.
The guy below also makes nice custom stuff in case that helps you.
http://www.hreatv.com/custombuiltparts.html
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