quick question
so i found an intake for real cheap, its off an 06 gto. guy says its an ls2... so that would make it an ls6 intake correct? part number is 12589181. the only thing i did jus notice was its a 4 bolt tb. thanks in advance.
No it's not an ls6 intake. Pretty much like an ls1 intake with a 90mm throttle body opening. They do not flow as well as an ls6 but you can have it ported to help out in the flow department.

