Header Install
You can make life a little easier if you back out the 3 bolts holding the cross member up, you can lower it by up to an inch i believe safely, remove the long bolts holding the motor mounts together and jack up the motor a couple inches, this should give you extra room and allow you to move the engine a little to the left or to the right to fit the headers. Also buy a can of pb blaster and start soaking the bolts now, both the ones where the manifold meets the head and where the manifold flange to the rest of the exhaust system is, youl'l need it. For the flange bolts if they are overly stuck get a long extension and slip a 4 ft pipe over the handle of your ratchet and have a friend turn the pipe while you hold the ratchet on the bolt, a similar trick should work for the bolts holding the manifold to the head but I don't know for sure as I have not done longtubes on my bird yet. Chain link fence posts (the ones that run along the top of the fence) are idea for this, they're easy to cut with a hacksaw and they fit perfect on most ratchets.
BS, it took me an hour and a half in my garage on jack stands and I have never done headers on anything before this.
My bet is the the guy quoted the book for manifold r&r and y-pipe r&r. He probably spent significantly less time on it but charged him for the 5 hours it would take to do manifold and y-pipe separately. I find it hard to believe that the time book would say 5 hours for the two of them but i've seen some crazy numbers in some of those books.
I'm sorry but i'm gonna have to call total BS on this. It would take much longer than this. I'd say 4-5 hrs minimum to them. I'd never allow anyone to work on my car with out my supervision. I could just see getting the car back and there be bolts broken off in the heads and other things broken/not installed correctly.
The long tubes are trickier, you have a very bulky header that you have to wedge into a very tight, confined space. I wouldn't consider them to be alot more difficult versus the shorties or mids. I think the hardest part of the job for me was just removing all the old hardware and not snapping off any exhaust manifold bolts in the head. Once I got through that step, everything else was smooth sailing.


