I replaced mine with LFR7AIX 2 days ago and it took 1.5 hours. I took out the airbox on the right side but kept the battery in place for the left side.
Tip on pulling out rear L&R coil packs: With the 12mm bolt loosened and the wire unplugged from the coil pack, rotate the coil pack 180 deg then pull up/out. Do the reverse when putting back in.