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For those of you newbies/veterans wondering if it will fit or what it looks like or whatever, here you go. I ordered this frontpipe from Mark Craig at DPPI (http://www.dieselperformanceparts.com) and the part number is GMS9401 and is an MBRP product. It arrived 2 days after I ordered it. As you can see from the pics the flanges do in fact line up just fine and just retain the gasket that came on the stock pipe as well as retain the band clamp at the turbo down pipe side.
The ONLY thing you will need to do to remove the stock pipe is remove the 2 bolts holding the hanger and bracket onto the side of the tranny. There is one clamp on the turbo side with one nut, you will reuse this. There are 4 bolts on the rear. Once that is removed you can slide the entire stock cat pipe out the front with no problem at all. This works for 2wd adn 4wd. You don't need to remove crossmembers on either.
In gear at idle with the stock pipe my EGT's were 400+..since the EGR is active only at idle and highway speeds I sat in the truck with it in gear for 15 minutes. The temp never got above 342, so that is an immediate 50+ degree drop just at idle.
The ONLY thing you will need to do to remove the stock pipe is remove the 2 bolts holding the hanger and bracket onto the side of the tranny. There is one clamp on the turbo side with one nut, you will reuse this. There are 4 bolts on the rear. Once that is removed you can slide the entire stock cat pipe out the front with no problem at all. This works for 2wd adn 4wd. You don't need to remove crossmembers on either.
In gear at idle with the stock pipe my EGT's were 400+..since the EGR is active only at idle and highway speeds I sat in the truck with it in gear for 15 minutes. The temp never got above 342, so that is an immediate 50+ degree drop just at idle.

