Dbeck's Headswap update.

you might try making some "dowels" for the headers. Take a bolt the same size as your header bolts, chop the head off and put one on each end...now put the header up there over the two bolts and thread a nut over it to hold it on there while you start the other bolts. Don't torque anything just yet, you're only using this method to get the bolts in. Next, remove the "dowels" and put your bolts in the end holes and toqrue to the proper specficiations in the correct order...and don't forget the gasket

The "dowel" idea works wonders for the lower intake install as well. The bolts are 7/16" and I assume yours should be the same. I use 4 7/16" bolts w/ the heads chopped off. Put one on each corner and lower the perfectly aligned lower intake over them. Get some bolts in other places and then pull your dowels back out w/ vice grips - or you could slit the ends w/ a hacksaw before you use them and use a screwdriver to loosen.

Good Luck