The aftermarket parts availability for our cars sucks! Aside from a few bolt on things, there's not much of anything! Most the major stuff I did I had to one off fabricate. The FRS which has been out less time has a plethora of options available, everything from superchargers to turbos and then some. What do we get? A couple choices of cold air intake woo hoo

no
company in the us even offers a bolt on cat back exhaust, and that's a super simple part to jig up and mass produce. We have gotten the short end of the stick when it comes to aftermarket products. Yes I know Scion didn't hit the mass numbers it expected to get with the sale of these cars, but if there where more options to customize them, then maybe more people would want to buy them. The Trd division has even slacked on this one. They don't have a fraction of the options they do for other scions.
I think the aftermarket manufacturers need to get with it. It's easy enough to take an existing supercharger for example and design a new intake manifold adapter for use on the IQ and then start selling them.
I would love to do the supercharger myself, but the only one I can find available is from Japan. It's not real easy to get ahold of, and then imagine if you needed some tech support on a re tune for the computer no thanks on that one! I'd prefer to buy some nice aftermarket parts made here in the good old USA with some good quality tech support.