PI Plenum Chamber Differences

["Kai M. Radicke" <kmr@pil.net>]

I picked up a TR6 PI plenum chamber (cylindrical black item with Triumph on
the side) last week.  I know there were two produced, any way to ID the one
I have (I'm guessing the port spacing is what is different, I can't imagine
much else being different design wise).

That said it really is a well engineered piece, I was surprised to see the
individual velocity stacks for each port protruding in on the inside of the
chamber... very nice.  Good job Triumph!

Kai