I honestly like Pypes kit. It was easy to install and everything was there for for it. And since, I've been upgrading it to my liking by adding my headers and swapping out the mufflers. It's a decent kit for a weekend warrior and can be installed in about 4 hours or so(that's how long it took me anyway.) If you insist on those long tubes, however, then maybe making your own kit would be a good way to go, but consider the emissions test if your state has it. Those long tubes won't pass unless you get a shorty h-pipe with cats. Maybe consider shorty headers? I've heard the long tubes on our 4.0s and it's awful in my opinion. Raspy and obnoxious. But it's up to you.