Would anyone like a write-up on how to replace the leaf spring bushings?

i would

Please do! I did this on my '97 HB and the fronts were a real pain. Those had metal sleeves and had to be pressed in. Ended up cutting them out (very carefully to not cut into the spring) with a sawsall. The two part ones on the rear end of the springs were no problem at all... I seem to remember all four being two part bushings on the extended cab on the HB - so I hope that's the case on the Frontier as well.

Heath

I started yesterday but ran into a snag. I ordered the bushing kit from 4x4parts, but I ordered the wrong front sleeve. They asked me to check if I have the 14 or 12mm bolt. I measured the threads that show and they were 12, so I emailed them how I measured and they sent me the 12mm bolt. Well, the threads are 12, but the bolt is 14mm body. So, I have to get the sleeve bored out to fit the bolt. This only applies to the front. I don't see why 4x4 parts would not just include both, the metal sleeve they sent me was just a pipe cut to length. I will get the sleeves tomorrow from the machine shop and finish the job. I will take some pics on the process and post them up.