So I went ahead with the swap, and for anyone who is wondering, it is possible.
I prefer the amber look over clears, and they seem to pop right in place. The only gripes are that I may need to pick up new connectors for the bulbs from the 96-98 Pathfinders because they dont plug and play, just held in with electrical tape for the time being. Also, the trim piece doesn't cover the whole area for the tailight housing, so I either have to figure out a way to cover it the rest of the way, or do the above plan to prevent water from creeping into the tailights.