Hello, I'm trying to look for a new engine and I want an sti engine upgade for my wrx 2001 as mine has gone terribly wrong. I've seen loads of engines on ebay but what else would I need to replace or can I buy a sti block with turbo and intercooler or do I need to get all the ancilliarys, the grearbox n other stuff ? Can someone give me some info of what I will need to do or what sti engine would fit straight in with the least amount of changes if there is any. Looking forward to your replys!
Thank you!

 

Good luck with that!