4" Slant Roll Muffler Tip Exhaust Catback System For 09-15 370Z Z34 3.7L V6 DOHC Product_Coilover Springs Kit or the cargo area volume

or the cargo area volume limits such as in the typical car's trunk design

HPS 2-3/4" - 3-3/4" (70mm - 95mm)

and the lowered center of gravity improves performance and increases stability

HPS 5" (127mm)

If your car does not have a electric windows then you have a car window crank handle on your door

4" Slant Roll Muffler Tip Exhaust Catback System For 09-15 370Z Z34 3.7L V6 DOHC Product_Coilover Springs Kit or the cargo area volumeUpgrading vehicle exhaust system is a great way to build horsepower, free up trapped torque, and improve upon restrictive factory systems. The larger pipes, low restriction mufflers, and tuned resonators of a well designed performance exhaust system can make a world of difference on your vehicle. The net result is lower auto exhaust backpressure, more horsepower, more torque, and a much better sound.