Randoms blow...Ive seen a ton of them crap out. The design isnt as free flowing as a Carsound either. A random tech cat should bolt right up, however, as long as you purchase it for your car.

Carsounds on the other hand are bought as blanks, which need flanges/02 bung(s) welded on depending on your setup. Or you can hit up SMSP or IPS, who sells them as bolt-on units.