aftermarket header diameter?

[bokaeser]

Looks like the smallest section of the stock header is 1 1/4 diameter.

Are the aftermarket versions of Marks, Kerker UFO all 1 1/2 inch?

 

[one2dmax]

Here's a thread with info:
http://www.vmaxforum.net/showthread.php?t=4029

I am not sure if I measured it but wanted to say 1 5/8" OD which would out it 1.5" ID

Sean

 

[bokaeser]

Do all of the after market do the crossover in the rear as the stock?

Thinking custom exhaust but that hard part is the crossover.

 

[one2dmax]

Most of the aftermarket do not have crossovers (for the 4-2 systems) but they do criss cross with the rear tubing.

Sean