I'm sure I have it somewhere but for me it's not worth taking the time. I've had both and I've seen both on the dyno first hand so I would always opt for the LBMs based on the fact that they sound ten times better and zero leaks and no ticks! That alone makes them better in my opinion any day. LOL

I guess my point is I could never imagine why anyone would opt to pay as much or more for headers when LBMs are as good or better and have none of the issues that headers have. I guess that what it comes down to for me...