the easiest way, is to remove the starter and motor mount on the passenger side, and you may have to jack the motor up some.  no real way of getting around it.  unless you have long skinny arms and miniature hands.

basically, there is NO easy way to put these in.  Expect to spend up to 8-10 hours on the install by yourself.

unfortunately, yes, 8-10 hours is average for 1 guy.  2 guys, you can MAYBE get it down to about a 6-7 hour install.  Thank god i am doing mine with the motor out of the car....

motor out header install = 5 minutes = pwnes 5.0 litres LOL