I thought I had seen some large ported intake / exhaust manifold gaskets for Nissan L6 a while back on the net but can't find them now... I checked the US distributors for Kameari - turned up nothing.
Anyone remember seeing anything like this?
FYI 240Z stock intake port hole in the paper / metal gaskets is 36mm - I need to get to 40mm
I was messing around with one stock one today, and opening it up on a spindle sander but I have mixed feelings about the results...