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Old 10-30-2017   #4
Car info: 1989 GTA 5.7L ASC Convertible, with RPOs: B2L, JG1, L98, and N10
Join Date: Feb 2011
Posts: 61

Re: Performance package for GTA's

GTAs got WS6 Performance Suspension, standard

RPO N10, Dual Cat Exhaust was available after a set date in 1989 (model year). I had an 89 with single cat, but have *heard* that if one complained to their dealer, it would have been retrofitted with N10 components. It was supposed to have been standard at the start of the model year, per literature.
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