For mechanical secondary 1991-pontiac-firebird-esi6483971 This item is an excellent

This item is an excellent upgrade for both street and drag applications

and adding cornering consistency to your 1979-1998 Mustang is easy with lower control arms from BMR Suspension

Reinforced glass filled polypropylene blade and plastic housing for minimized weight

the SB054 is cold formed to better resist torsional fatigue and retain its "memory" far longer than the hot-formed bars used by many competitors

Installation requires cutting the factory Y-Pipe

For mechanical secondary 1991-pontiac-firebird-esi6483971 This item is an excellentMech Link DP Standard 40% progressive ratio found in most carburetors (gold in color). Used on mechanical secondary carburetors only. Includes required cotter pin for installation.