Dodge Challenger Engine Upgrade Package Stage 3 5.7L ,6.1L ,6.4L HEMI Engines/Pulleys & Tensioners our trademark merge collectors with

our trademark merge collectors with scavenger spikes

After carefully looking at all placement and airflow direction options

Exhaust Runner Volume         85 stock     91  ported

heavy braking

Our ZR1 header systems are available with 1-7/8" primaries and your choice of 3" x 3"Catted or non Catted X-pipe systems

Dodge Challenger Engine Upgrade Package Stage 3 5.7L ,6.1L ,6.4L HEMI Engines/Pulleys & Tensioners our trademark merge collectors withDodge Challenger Engine Upgrade Package Stage 3 5. 7L, 6. 1L, 6. 4L HEMI Note: Must accomplish Starter Package Engine Upgrade, and Stage 1 & Stage 2 Engine Upgrade previously. Price $1,200 Anticipated HP increase over stock HP 90 120 HP, depending on displacement of engine. MTI Racing Ported & Polished Cylinder Heads Parts $1,200 Labor N C $1,200 SEE NOTE ABOVE !!