i like my mac LT's some people hate em but i dont know if they ever actually have ever owned em.. most peoples complains is about the coating, a nice spray of header paint would take care of that.. for 200 bucks you cant go wrong
i really dont have an opinion on the coating, my car rarely leaves the garage (i'm guessing i have about 2,000 miles on em in a 2 year span)
Edit: and the square tubing works fantastic, ive done it on many cars.. and no it doesnt go across the whole fender just in the inner lip where the engine bay is. cover the ends in some rags and you dont have to worry about it.