Hey guys, so a friend of mine is offering to sell me his old xforce exhaust from his forester for a good price and I was considering buying it, to my knowledge, the exhaust is a 3" catback and has been modified to a 2.5" inlet, I was thinking about taking it to an exhaust shop and getting it cut to suit my gen3 my00 RX liberty but have heard that 3" might be overkill for an NA and I would potentially lose backpressure so I just wanted to get some thoughts or advice on anyone who's a bit more educated on the topic.
Thanks in advance guys