if you are going to keep the stock head unit the PSM is worth every penny. to get the most out of it though having a proper 4 speaker flash done so that you can retain the fade function. i like having the fade, but if it's not necessary for your taste.....that said, the PSM is a very powerful tuning tool. There are many independent shops now (mine included) that have radio flash capability, so you might be better off looking in that direction.

m