LS1 with two GT2871s
I used a Silverado manifold on the left, cut the flange and welded a T25 flange on. This puts the bottom of the turbo oil outlet at the top of the oil pan. Also welded on a schedule 40 pipe for the waste gate.
I used the front manifold from a 2008 Impala for the right side. I welded two 45 angle schedule 40 pipes to the flange for the turbo. I cut the crossover and welded a schedule 40 angle on it for the waste gate.
Firewall clearance on the left is tight and will have to be modified.







