Arich92

Iv been out of the honda game for a good amount of years but recently purchased a 05 si ep3. That being said im complety new to the k series. Always had b series. My main concern is trying to find all the upgrades done to the vehicle its my understand it should have a k20a3 in it but i know the vtec killer setup was popular in these models im trying to figure out if its been done to mine as dumb as it sounds. My reasoning for thinking its been done or partially done is i belive i have alot of the main components. Full invidia exhaust. It appears the previous owner bypassed the immobilizer. Cold air intake. And the final thing im stuck on is if my head is from a rsx type s. I cant find any codes except for on the intake manifold its a PRB HF-2, wich seems to mostly trace back to the type s motor. Iv attached a pic below if anyone can tell anything by that. Any info suggestions would be helpful