Which longtube headers do you guys prefer for you 5.0l? Mac Longtubes or BBK longtubes? I noticed on this site that the majority doesn't favore either one. Which make more power? I noticed the design is different also. Oh, and could I live with the non-ceramic coated headers or is it best to shell out the extra cash? I don't really care about how nice they look b/c they are hard to see anyway. Will non-ceramics last me a long time?