Does the ITR intake manifold bolt right on to the LS with no other modifications? Or would I need to get the skunk2 one?

 

its a litte bit different if i remember correctly. The skunk2 is cheaper too and does the same things.

 

I believe the flanges are different and require modification.

 

the flange requires modification. I cut the whole left side of the manifold off right around the runner and had my friend weld on a chunk of aluminum. I just tapped a new water passage and drilled a few holes. Also, the center whole has to be moved down about an inch. line it up with a gasket and you can see the difference.