Do you know if there are any Cats out there that are HI flowing and that are slimline as well? only cos the stock one get a scraped every now and then. If not then I'm not too fussed as I have been surviving with it for a while

Oh and one more question.

I have been searching on the forums for a definite answer but I cannot seem to find it. Its about the difference between PM 4480 and PM4499. Everytime I get close to what I want to know another thread seems to contradict the answer.

I know that PM 4480 are pretty much the best header for pre AU falcons (i.e. E-series).

But Ive been looking at some PM4499's and most people say that they are almost the same. however they look completely different. I know that the 4480's are good for a wider torque range through the revs. But what I wanted to know is at what rev range does the 4499's kick in. Low or high?

Cheers

Get the 4480's they have more power everywhere...