honestly, I like the look of the 99-01 tail lights more than the new 02. I know that our 99-01 tail lights are all RED in color...and may not be "safer" than an amber...but I still wont spend the hundreds of dollar to replace.
If your main concern is safety, just do it.
If your reason to replace is for looks, well, I cant stop you...but I beg you to think twice.
just my humble opinion.
BTW, welcome to the club. There are a couple of posts for new-comers, Eg. "explain your name"..."favorite color"...blah blah blah...find them in General discussion.
Yes, the amber lenses would be a good addition, for safety, since the turn signals are not very good, in red, on a sunny day. My thought is to just change the corner lenses and leave the tailgate lenses as they are. The outer lenses are around $50 each and might be well worth the expense.