TTI vs Dougs

I recently installed TTI headers (1 7/8" primaries ceramic coated polished with the thermal barrier) on my 360 in a 71 dart. The underhood temperature is noticeably lower and more aggressive performance. My main sell on these were the bigger size and ground clearance since the old headers were destroyed. These fit like a glove and no exhaust leaks at all. The old headers were hedeman.