OEM stock parts were used on the rebuild. It does have a 16g installed on it now. It is chipped for a 16g with all the performance modifications and that was done prior so ut is tuned still for the 16g. The belt I didnt replace. The bumper hasnt been replaced. Just the turbo but there will also be like $800 worth of extra pparts coming with it that werent 3days ago which are afc apexi neo. fuel pressure regulator.. high flow fuel rail. I was told it would be $60 to fix the a/c as all the major components that could cause the problem have been replaced its a simple wiring issuse so the shop said $60 it was rebuilt because the guy who had it planned on building it up which he did and not every1 waits for things to go wrong they fix them before they do. "Preventative matinence" - If you did it more youd have less out of nowhere leave you stranded type problems