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Features
Primary Tube Diameter: 1 5/8(41.3mm)
Flange Thickness: 3/8 (9.5mm)
Collector Diameter: 2.5 (63.5mm)
Primary Tube Gauge: 16 Gauge
Collector Attachment: 3-bolt flange
Engine Type: LS1, LS2, LS3, LS6, LS7
Engines: 4.8L, 5.3L, 5.7L, 6.0L, 6.2L
3 Bolts Collector Construction, collector Merge Spikes, gains over 20+ hp
Fitment
LS1 LS2 LS3 LS6 LS7 Conversion Swap Headers (El Camino, Monte Carlo, GMC Sprint)
1960's, 1970's Chevrolet El Camino, Monte Carlo, and GMC Sprint
4.8L, 5.3L, 5.7L, 6.0L, 6.2L V8 Engines Only
For LS series engine swaps only. These do not work on standard SBC or BBC.

