You can check which pcms will work in the same tuning folder you have access to. stuffed the pcm compatibility into the tuning guides and worksheets folder. It's an html that is labeled 97 to 05 pcm info.

If using HPT you can simply overwrite a same year/model pcm as long as you have the year unlocked. If you have only a vin unlocked you'd be best off having someone with a dhp do the write for you. DHP being unsupported etc, is fully unlocked.