I think the computer is pretty accurate.

I tested my A4 & it is real close.

IIRC, a 06 GTO will have a 6.0 engine, not a 5.7?
I believe a 04 GTO is the only year for a 5.7, & it is not a light car IMO.

I guess they are lighter than the new Camaros, but those are close to 4000 LBS.

MBHD

12 port SDS EFI