im thinkin about the 99^ bumper, hood. also was interested in the center console.
mine is a 97 limited, 214k about 60k on rebuild, dark green, removed running boards
I wouldn't waste money on the 99+ bumper personally, I'm not that much of a fan to go out of my way to get one.
Sport hood is an expensive project, I've found an aftermarket one before that looks identical if you are interested.
Center console is a very popular mod that I would say would be your be to start there. Then 99+ head lights and 2001+ tails or LED tails.