I'm getting ready to order an exhaust for my truck and I'm running into a dilemma. I have a 2004 LB7 with a cat. I would really like to get an MBRP system that removes the factory cat. Am I going into trouble removing the cat??

Nope not on an LB7. Removing the cat on the LLY and above will throw a code, but not yours. I have had mine removed since about 3000 miles. Less restriction and possibly lower egt's