First of all Welcome to the forum!
Second of all the motor can be completly serviced without pulling the cab or motor (just another added bonus with driving a bow tie

). Im not sure what year your looking at but the 02-03 (I think) have a 200,000 mile warranty on the Injectors. The 03+ have 100,000 mile warranty on the injectors
I actually never heard or thought about that. I looked under the hood of Power strokes and noticed the motor goes under part of the cab but never thought you'd have to remove it for work.