Thread: GM Proving Grounds test helmet
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Old 12-15-2010, 04:29 PM
lbnaz lbnaz is offline
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Default GM Proving Grounds test helmet
Selling a GM proving grounds test helmet with the name Joe Bidwell on it. He was a head GM engineer for quite awhile. He developed the uni-control steering and was on Time Life cover in Jan-63. Ebay number 120660542112 selling at no reserve. Email or call Larry. 520-349-2337
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