Meanolgoat, are you absolutely certain about that? I don't beleive a 65 GP has a different rearend housing (as far as axle bearings go) than any other 65 fullsize. I own a 65Gp and have put replacement axle shafts into it's rearend that I pulled from a 68 Catalina.
Hollanders even says axles shafts are fully interchangeable between all 65-70 fullsize Pontiacs.
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Red\black 65 Grand Prix 467 E-head stroker, Viper T-56 6-speed, 4.10 spool
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