Well in all fairness and not to discount or ignore the points you made BADAZGTP, but our exhaust tips come from the factory using clamps. Of course the mufflers are not that way.
I will offer these tips in addition to what BADAZGTP stated. If you decided to go with the clamp method (and I would do this myself actually), I would use the stock hanger locations. Then I would clamp everything down and once it was tight, go out and drive around a few miles. Park the car and let everything cool off.
I guarantee you, you will be able to go back out there and find that things are loose. So tighten them back down again and after that round you should be find. I have pulled off my exhaust tips a few times and without fail I can tighten them down and they will need further tightening after just a little driving, but after I do that they are usually fine.
I know most will disagree with me, but I like the clamp idea because it would allow quick removal and or replacement if and when needed. Are you going to be changing your mufflers or tips that much? No. But I like knowing that when and if I should that Im not going to have to take it to a muffler/exhaust shop.
I live in a town that doesnt have a lot of resources. Yeah we have an exhaust shop, but because of the lack of resources around here I have to think ahead, plan ahead so that its easier for me to do instead of hoping I can find someone to do it. Its about 60 miles to the south before I get to any place with the resources that would change that and well, I aint driving 60 miles to just have a muffler and/or tip welded.
