pro chamber is suppose to be good and comparable to an X.

 

can you feel the diffrence from shorty's to LT's

 

Save your $$$ and buy better headers...Hooker ftw!

 

I have shortie equal length mac headers.... hey I like them! never tried anything else but I can tell you... Fitment was great! and for what I wanted... worked great! lol so my experiences may be the same for the long tubes! lol