Can someone tell me going by this website
http://www.thepontiactransampage.com...ebird9302.html

if the Dynomax headers part #87714 have the same size primary tubes as the normal MAC or Hooker shorties that most run. Correct me if I'm wrong but the OUTSIDE diameter of all of those are 1 5/8" correct?

May seem like a stupid question but there is a method behind my madness.

Adam

 

i believe that is correct, but the collector for the dynomax is only 2.5" instead of 3".

 

Yeah the Dynomax collector is smaller, I would suggest going with the larger diameter collector systems on the shorites.