The little gizmos are called centering devices and are available for $300
per car (2 couplings). They can be ordered from CMW Enterprises on line at
wtmitchell@worldnet.att.net and shipped UPS to anywhere in the world. The
currently available sizes are for the early Donut 3.780" bolt circle
diameter. Full instructions are included with the device and no diassembly
other than the 6 donut bolts is required. No machining is required.
Hope this helps. I have used these since the original days of Formula 3
before Formula Ford.
Wayne Mitchell, San Diego CA
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