Thrush Thrush Glasspack Muffler - 2-1/4 in Center Inlet - 2-1/4 in Center Outlet - 20 x 3-1/2 in Round Body - 25 in Long - Red Powder Coat - Universal Water Temp Sending Unit 1970-1974 Pontiac FirebirdProduct Description:

1970-1974 Pontiac FirebirdProduct Description:

OEM 12- or 16-bolt heads or equivalent

Increased magnet strength

Now there's no need to build your own tunable high-output distributor for non-computerized HEI Chevy V8's

the switch gives you the flexibility you want in a POWERSTEP

Thrush Thrush Glasspack Muffler - 2-1/4 in Center Inlet - 2-1/4 in Center Outlet - 20 x 3-1/2 in Round Body - 25 in Long - Red Powder Coat - Universal Water Temp Sending Unit 1970-1974 Pontiac FirebirdProduct Description:Thrush Glasspack Muffler 24201 Single Outlet Overall Length 25 in. Shell Length 20 in. Inlet 2. 25 in. Outlet 2. 25 in. Tube Diameter 2 in. Body Diameter 3. 5 in. Heavy Gauge Shell Provides Maximum Durability Expandable Bushings For Custom Applications Perforated Center Tube Minimizes Turbulence CRF For Powerful Tone and Long Life Straight Through Design For Max. Flow and Power Thrush products have been a staple of hot rodders for over 40 years as