I have an 89 GTA 350 Convert and the window sticker says it has a High Output 5.7?
A guy in our club also has an 89 GTA convert with a 350 but does not say High Output and he pays less on insurance because of this, whats the difference?
My car also says it has a Special Level III Suspension? Did all GTAs have this? And whats the difference?
A guy in our club also has an 89 GTA convert with a 350 but does not say High Output and he pays less on insurance because of this, whats the difference?
My car also says it has a Special Level III Suspension? Did all GTAs have this? And whats the difference?
Kevin91Z
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Mar 23, 2026
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The only thing I can think of would be the "high output" would be the dual-cat exhaust, rated at 10 more horsepower (240 HP). The single cat exhaust would be rated at 230 hp.
All GTA's should have the "WS6" suspension, which is supposed to be the best available for a thirdgen.
All GTA's should have the "WS6" suspension, which is supposed to be the best available for a thirdgen.