for those who were concerned about the t3 flanged being a restriction to the collector, it's the pictures, it's been cut to match perfectly & then ported to exact size for a smooth flow.
The equal lenth, it's about as close as it's gonna get, i have it measured to about 1.5 inchs difference at the worst. I'm not worried about perfection at this point, i wanted it close for a good flow.
My chrage pipes are all being re-done as well, i'm going to try to improve flow as much as possible, it was my goal to do so this winter, i think it's going in the right direction!