I am in the middle of several repairs and upgrades of my 2002 7.3L and while it is all apart I noticed my up pipes are shot. I see quite a few options, some expensive, some not, some SS, and others cheap steel. Any recommendations from someone that has replaced theirs? I think T304 SS is the way to go, but is it necessary? The bellowed versions seem a better idea than original OEM style. Has anyone tried the BlackHorse Racing set off Amazon, would you recommend it? What about Dorman? Some of the more expensive (xtreme diesel, sinister, riffraff) don't seem to be built any better than BlackHorse or Dorman. What is the best set of up pipes I can put on my 7.3L??? And should I wrap them in heat shield before install?