38mm is not to thight then? Interesting using not stainless 
But then again it does not expand as much as SS does, that's corrcect. thickness is also the right size Looks impressive, especially the long runs, will be good for serious torque gains in mid rpm-range and good top-end power 8)
rgds
habib
But then again it does not expand as much as SS does, that's corrcect. thickness is also the right size Looks impressive, especially the long runs, will be good for serious torque gains in mid rpm-range and good top-end power 8) rgds
habib