Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Sun Feb 17, 2013 7:45 am
I ported the lower and both my 8 port, and 4 port heads. I know it made a difference on the 8 port, as I could compare the before and after. I couldn't do that with the 4 port. The upper manifold on mine is port matched and polished as far up inside as I could reach, but that really isn't all that far.