My friend just put this turbo on his EVO, but he's said he'll take it off today. So, it's basically new, b/c he bought it new... Well I currently have rge stock 13G setup so I believe the WG is internal...if not correct me... Stock injectors... My friend (the same guy) actually owns a shop and is definitely able to do any of the work including custom work, and has connection with others who own machine shops...I hope by *tuning* this is what you meant, and not ECU wise... Why would I have to flatten the Exhaust manifold's Lip?