Borla Exhaust System: CORVETTE 5.7L V8 AT/MT 1986-91.

BORLA exhausts are built of aircraft-quality T-304 stainless steel -- stainless inside and out.

Borla's free-flow exhaust utilizes patented award and race winning technology to deliver quality, sound, performance gains and enhanced fuel economy — all with an easy bolt-on installation. All BORLA street products carry an unsurpassed written million-mile warranty. Gains are usually 7-10% increase in HP.