I am in the middle of the mystery mod, and the exhaust manifolds bolts take alot of time to remove. They are rusted in pretty good, lots of liquid wrench should help.
It is a two person endeavor. One to rachet while the other one guides the 13mm socket. I dented my oil filter doing it. And the rear one comes off only after removing the alternator, which require removing the accessory belt, which requires removing the tire, and the access panel.
Be ready for a lot of scraped knuckles, broken bolts, and a new y-pipe after cutting those bolts. But then again I live in the rust belt, Indiana.
