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Old 07-27-2011, 12:13 PM
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Rack776 Rack776 is offline
Chief Ponti-yacker
Join Date: Mar 2007
Location: Eastern Pennsylvania
Posts: 516

The thicker bars might have been part of the 73 crash standards they had to meet,
once the 75-75 bumper was used they might have used a thinner bars to save some weight/cost.

The 74-75 front "battering ram" ....I mean bumper is stronger than the 73 set up so the fender bars were less important in a crash and the extra weight went into the bumper bar.

Just my opinion. Good catch on the different thickness bars.

Jason Rackawack
1975 455 Trans Am - 1975 Firebird 400