First and foremost, welcome back! As you already pointed out Needswings is still around. In fact, they adjust just released new headers that are 1/3 the price of the MBH Performance headers so that's rather enlightening. Since buying my SRT-6 back in 2014 i've gone the custom route for alot of things. I had custom front/side splitters made, elected to go for a custom exhaust over that of an off the shelf model, etc. Ground Control also released their coilovers last year as an alternative to the KW V2's. So in short, the aftermarket....albeit very small....is still pretty sparse, but there have been a few new products released over the last year or so, so it's by no means dead.