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Ask ase_master327 Your Own Question
ase_master327, Shop Owner
Category: Car
Satisfied Customers: 5288
Experience:  +15 years experience on imports and domestics. Bumper to bumper diagnosis & repair.
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Submitted: 8 years ago.
Category: Car
Expert:  ase_master327 replied 8 years ago.

As long as they are the same shape they are the exact same part.

It would help if we knew what the 99 pontiac's information was, like model and engine size, though.

Customer: replied 8 years ago.
grand am 4.3
Expert:  ase_master327 replied 8 years ago.
No 4.3 in a 99 Grand am, but there is a 3.4 VIN E engine, which is the same as the 3400 VIN e engine in your yes, it is a direct swap.