Welp. Your choice. There is a reason people hate on eBay products. They're massive pieces of s**t, and WILL fail.
Intercooler and charge piping from eBay are fine, even a radiator. ANYTHING else is not. Not even a catch can.
YES, I built my boosted Integra myself, YES I spent money on it, but it held up. I had very few problems (mainly with tune, and wouldn't ya know.. shitty eBay parts!) You will eventually get tired of dumping money down the drain when s**t breaks, and either sell the car, or go the legit route. Either way, it's your car, and your money.