I haven't heard an X pipe combination I liked on a 5.0 yet (not saying they're bad or anything, but the ones I heard didn't sound good). This one '92 in our shop had Long Tubes, X Pipe, and Dynomax superturbos. I know the dynomax mufflers are pretty quiet but I didn't like how it sounded at all. The magnaflows would sound different. You might just stumble onto a really good sounding setup. Try it and tell us how it works out for you. Then again, if the holes aren't too big you can always patch it up with some muffler mender and dust some paint over it.