For real. :hehe:Ok count on this, those carquest gaskets are three time the size of stock ones. You may strip out your Y pipe when using them.
Use alot of pb blaster let is soak over night. Then use more pb blaster.
Count on at least 2 days to do this. According to dealers it should only take 4 hours.
During reassembly use anti-sieze.
I have heard the donut gaskets from a old Chevy 350 will seal better and work better than the ford dealer powerstroke gaskets and they are way cheaper from any auto parts store.