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Does anyone know what this is?

http://cgi.ebay.com/VINTAGE-TEAM-ASSOCIATED-RC10-RC-10-DRILL-JIG-RC_W0QQitemZ370271700459QQcmdZViewItemQQptZRadio_Control_Parts_Accessories?hash=item5635e9c5eb#ht_739wt_941

Template for 6 gear to stealth 2.25 conversion?

It's the template to show you where to drill the chassis for the stealth trans mounting holes on an old original "A" gold chassis which was only drilled for the 6 gear trans when it was original produced and sold. You screw it down with the arrow pointing forward to the rear suspension mounting holes and then it is in the correct position for you to drill the 4 stealth trans mounting holes in the chassis.