I went with the LCE header too. Really happy with it. As for the muffler, looks like your set on the magnaflow. I am running the flowmaster 40 series delta flow, and I like it alot. I dont have experience with the magnaflow, but I heard they are quieter than the flowmaster. I like the flowmaster because you could probably drive your truck on top of it. Yes they are spot welded on the inside...but they are solid and can take the abuse. I went through the same dilema, what muffler to use. Its really just personal preference. Just stay away from the glasspacks, they sound horrible an a 4 banger IMO.
