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Working on a 66 Dart with a 408. I have TTI headers and also bought their x-pipe as well. I am wanting to add cutouts into the X-pipe before I permanently put in place. My question is how do I know where would be the most effective place to weld them into place. Also do they need to point down...

I just finished installing my headers on my 66 Dart. During the installation because of the tight fitment the headers ended up with some scratches in the ceramic coatings. Is there any repairs that I can do with this? Its not a show stopper but if there is a fix I would like to do it now before...

Building a 408 for in my dart. Going with a good size roller cam, stroked, tti headers, tunnel ram and ported heads plus other mechanical upgrades. engine builder is recommending 3" exhaust, I was thinking 2 1/2". Going to be driving it approximately 1500 miles a year. Is 3" really needed of is...

When looking at exhaust I see a lot of x-pipes and h-pipes and was wondering what advantage this gives you if any or is it just a sound changer. I have always just gone straight back to a muffler. I will be using TTI headers and will be running on the street about 1500 miles a year. They sell...

Im Working on my 66 Dart that will have a 408 put in it with auto trans. Was reading the TTI exhaust site on their exhaust system that when you move your rear springs in you have to run a fuel cell to have room for the tail pipes. Has anyone else run into this problem and if so what did you do...