Yeah, it is a little difficult in some parts, but not impossible. I did it with just me, but two people would make snaking the old one out much easier.
The most difficult part was disconnecting the old cable from the firewall. You need to remove all the plastic from the the area above the firewall in the engine bay to access one of two plastic clips you need to simultaneously depress and pull. The other of the clips is under the accelerator pedal...this one is the tough one. Everything else is simply removing air box, intake elbow, throttle body, then unhooking the cable end (like a bike brake cable with a little cylinder at the end of the cable). After that, unfasten the two plastic clips and pull out from the engine bay side of the firewall. Install is WAY easier.