Not too hard. I just did mine, but can't remember everything that you have to do. You have to pull the TV, throttle and cruise cables off the intake. If you are just swapping two, then you may be able to get by without disconnecting the fuel line on the passenger side(feed line). Heck, you may be able to get away without removing either, but I wouldn't bet on it. You'll have to remove the coil pack. Then just take the bolts out that hold down the fuel rail and pull up on it. Try just pulling up the side you need. Unplug the injectors, and pull off the two you want to swap. Check out the o-rings on them while they are out. Coat them with oil before trying to put back in. Gently push them into the fuel rail, then push the fuel rail down to push the injectors into the intake. I'm sure I forgot something, but it is straight forward, so you should be able to figure it out the rest of the way. Don't forget to plug the injectors back in. Good luck.
Brian