Lse9x LS Swap 1-7/8 Long Tube Headers

1 7/8" runner diameter true long tube header designed specially for Ls Swapped e9x/e8x chassis (RWD subframe only).   Will fit 4l80e (requires ears trimmed on bellhousing), 4l60e, t56/6060 transmissions as well as many others.  Headers only, gaskets, bolts only, no other piping included. 

Features:

• 1-7/8" long tube runners (vs 1.75"" short runner of competitors)
• Stainless steel mandrel bent design with minimized runner welds. 
• 3" slip connection with velocity spike merge collector
• Fully welded runners to flange inside with ported opening 
• Designed for spark plug and wire clearance (see photos)
• Optimal starter clearance (can be removed with headers installed)
• Includes 2x MLS ls exhaust gaskets (not graphite JUNK)
• Includes 12x m8 flange bolts
• Headers do NOT have 02 bungs to allow for various applications, O2 bung can easily be added to collector or exhaust after header. 
• Relocation of factory fuel line feed closer to frame rail required. 
• Headers may require slight trimming and modifications per application and engine location.
• Gen1 (plate style) lse90 swap mounts may require slight modification for clearance. 
• Installation from bottom, Support engine and remove engine mounts one at a time to install.  
• WILL NOT CLEAR 6 Bolt heads or block without modification to #1 runner on driver side. 
• Designed around RWD LSe90 mounts run it the engine far forward position for firewall and steering shaft clearance.  X-drive RWD conversions may need crossmember modifications of mount extension for forward engine mounting. 
• 1" thick oil cooler adapters only