The dual exhaust (R/T and R/T Turbo) are complicated but Bosal makes aftermarket (OEM or better quality) but it can add up ($$).

The DOHC cars have tight engine compartments. The DOHC Turbo cars have VERY tight engine compartments.

The undercarriage of my car was pretty rusty due to 7-8 years in Michigan, but surprisingly the body painted surfaces (both outer an under) show zero rust.

You can fit a lot of rubber under these cars--I run 245/50/16s but people run wider on 17 & 18 inch wheels.