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Old 06-29-2008, 09:37 AM   #3 (permalink)
joe_padavano
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Join Date: Mar 2007
Location: Northern VA
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All 68-72 GM A-body cars use the same frames, but there are a number of variations. You didn't say which you have, so here's the list:

2dr HT (Holiday Coupe) and 2 dr sedan (Sport Coupe) use a 112" wheelbase open section frame.

Convertibles use a 112" wheelbase boxed frame. You can use a convert frame under a HT (GM offered this in some years as the HD frame option) but as noted above, convertible frames bring big dollars - Carlisle ASKING prices (not to be confused with actual selling prices) are in the $2,800 range.

70-72 Monte Carlo and 69-72 Grand Prix use a unique 115" WB open section frame.

Four doors and regular wagons (and I believe El Caminos) use a 116" WB open section frame.

Vista Cruisers and Buick Sport Wagons (well, the ones with vista roofs, anyway) use a unique 121" WB boxed frame.
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Joe Padavano

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