SLP’s Loud Mouth lineup of exhaust components is very popular in the after market realm, it’s actually one of the most popular systems for the f ourth-generation Camaro and Firebird.

SLP's 1.75-inch Long Tube Headers and Y-pipe come in three different versions for the early '98-'99 F-bodies (PN 30046), '00 models (PN 30047) and the 2001-2002s (PN 30048). All cost around $1,500 ...

This all started with a bi-annual visit to the folks at SLP Performance. At this point they had designed, installed, and tested their headers and exhaust on quite a few Challengers. We had already ...

That was down to having 350 horsepower and 390 ft.-lb., thanks to the upgraded pistons, intake, exhaust, the six-speed from the C4, and a lightweight aluminum drive shaft.