Intrus,

There is an alternate way to get to your front signals and marker bulbs without removing the front bumper. I changed my marker bulbs to LEDs by removing the plastic wheel cover around the fenders instead. I found it easy except for one clip being the most bottom one holding the mudflap. Not the one under the rocker panel, but the bottom one in the wheel well. That clip does not have to be removed though since the plastic guard can easily be bent. Anyways, I personally like doing it that way better and probably quicker, although I haven't tried the bumper way.
I have also changed my inside bulbs with LED's, except for the rear reading lights where I found that since the bulbs are sitting at a 90 degree angle, they are not emitting enough light to be useful, even the ones that have LEDs on the sides. This only applies to the model that have the sunroof.
I replaced the silly bulb in the truck with an LED one that has LED's all around and find it adequate for me.
Cheers