Hello all, I am at a crossroad and wanted to get a few opinions. I love my 2015 B5 Blue Shaker RT Plus SPAG. There is only one thing that is nagging me. Should I upgrade to a Scat Pack Shaker for the 6.4 485 HP or should I start doing engine mods on my current ride? She just turned 20K miles yesterday and while I have done a few cosmetic upgrades but have held off on performance upgrades till I figure out which direction I want to go. I would be happy with about 450 to 500 HP...Thoughts?