Base Manifold and Rail Kit for Lo-Ram 300-620 - 300-600 Not Promoted Notes: Fits all 2007*-2008 (*except

Notes: Fits all 2007*-2008 (*except classic body) GM 1500 4

Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive

Collector Attachment: 3-Bolt Flange

is perfect for the person looking for moderately aggressive sound levels both inside and outside of the truck

Base Manifold and Rail Kit for Lo-Ram 300-620 - 300-600 Not Promoted Notes: Fits all 2007*-2008 (*exceptOverview: The Holley LS1 2 6 Lo Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1 2 6 (cathedral port) cylinder heads. These intake manifold and rail kits will work with OE (Original Equipment) or aftermarket cylinder heads. The 300 600 is the lower manifold in the 300 620 complete kit. Offering this separately allows you to select your components individually as you build your system. The Lo Ram intake