Global West solved my problem
Paul at GW cleared this up. Their website has a clear warning about the mid-year 1973 firebird change to the bigger bushings on the lower control arm. The uppers are 1973 bushings and the lowers are 1974 bushings with the 9/16" bolt. All other suspension geometry was the same as the early 73's.
Global West is going to exchange the bushings... even though it has been SIX YEARS since I purchased the parts. I don't know many other vendors that would fix a problem so long after an order. I also purchased their sub-frame connectors and body bushings. Very pleased with the quality.
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BrockB
1973 Trans Am
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