I'm about to pick up an exhaust system for a new 402 stroker, and have been offered a stellar price on a set of Kooks 1 7/8" headers. But, I'd like to run a dual cutout QTP collector pipe (I've already been warned about ground clearance) behind it. But before I reach the point of no return, are there any significant dimension differences between these two brands of headers that would keep this from working?

Thanks in advance

 

Barry from QTP mentioned their headers are a tad longer, thus the QTP Y is shorter and may cause issues when used with the Kooks headers. I aksed him about this a week ago.
Funny you ask about the dimensions, hopefully someone has measured both, looking at them, from pics posted (not having both in my hands) they look identical, flange shape design, primary tube bends and routing, and the nameplates are indentical locations and shapes as well. Kind of wierd.
Charlie