I've got to say i was surprised at how easy the install went. When i put them in my Z28 it took about 8 hours with a lift, I did these in about 4 hours in my driveway. I was also really surprised that its quieter now then it was before with manifolds, no cats, and a 3" magnaflow muffler. It drives great too.

 

Did u notice a big power increase.

 

I noticed a good increase above 3000 rpms...

 

It seems to pull harder all over, haven't really gotten on it too much yet though. I didn't have anything to do today so i figured i'd throw them on in preparation for the 408 going in a few weeks from now.

 

Notice any changes under 3000 rpm's? How about your off the line performance? Any gain? Any Loss?

 

I'd say a gain if anything, it sure feels better.