I've read the write up on doing them but while I have the motor out of the truck would those of you that's done it recommend putting them on first? I'm finally coming to the end of my 4x4 swap and 5.4 swap. Also anyone have the part numbers for the bed bolts and clip nuts?

 

I dropped the engine in first and then slid the headers into place from the bottom side. You can always leave the hoist attached to the engine so you can slightly lift it for some wiggle room. Have your inner fenders out and it will be much easier to get to the bolts.

 

One more note: you'll have to remove your dip stick tube for installation