Wow !! those are cool headers. Now I wished I hadnt bought the Laysons shorties I've already got. But on the other hand, the TTI headers sure look like a pain to install.
My TTI's weren't to hard to install. In the instructions that come with the headers, there are some measurements that you have to take from the inner fender to the center of the crank to make sure the engine is in a certain possition and the headers will slide right in. The trick is having the car high enough off the ground to tilt the headers up enough. Found this out taking them out again to pull the mill to build the 416.
Another nice thing about the tti's is there ceramic coating with the thermal barrier on the inside. I'm SO glad I spent the extra money and got this. The advantage of this over stock manifolds is night and day. After running on average of 250+ miles at speeds averaging in the 90 mph range (that's around 4000 rpm sustained in my car), I could hold onto the headers 10 minutes after I shut it off. The valve covers were hotter than the headers!! Plus as you can see in my signiture, there is no ground clearence issues with these headers.:thumbup: