It’s just the fact you’re upside down and up under the dash. Getting the booster in and out also a pain in the ass as mine was removed as part of the build.I didn't think they were all that bad. Take the seats out so you can lay down and then throw a rug down over the seat studs.
but I also wrench for a living so...
done a shifter cable on a Polaris Ranger Northstar crew today. Much less fun than swapping pedals on a fox body Mustang. Engine R&R on a turbo rzr on Tues/Wed. Also not much fun.