Some of it yes. (2) of the amps came from Extreme Sounds which has been out of business for years. I might have gotten the components there though. Components and deck were from Alpha of course. The subs were from my friend, he had (12) 12W6 in his Pontiac Transport. He had the loudest systems in this area since the early 90’s. He did the install on the 93 GT for me too other than I did all the wiring etc.