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Well....... they're finally on and car is running again! I have no dyno or track results yet but sotp dyno showed good gains. Its not night and day but its definately felt. It breaks loose easier now and is soooo much smoother through the rpm`s. Sounds a lil better, I like it. I usually run through 4th gear when spirited driving and let out around 120, and it sure gets to 120 a lot easier. I'm all smiles now.
As for the installation......a big pain. Headers are much easier to install. But the manifolds fit fine. Dipstick fit fine. I just had to do a little massaging on the cat on driver side to get to fit. If I was to bypass cat with 3" pipe it would of fit perfectly.
As for price....its really hard to beat. To me its worth it because my unplanned budget I got. I have around $300 in them with all new gaskets and some nuts and bolts. Came with o2 sensors too but I had to wire my connectors to the 08z06 sensors.
Overall it wasw worth it to me as far as I can tell. Time for retune and dyno now