right answer for the 260s, i think ( presume both pics are of 260z by looking at the extra brackets)
so you can see in the 240, the drier is on the LEFT and on a vertical bracket. the only place that is possible is on the tower strut. but as you know its very close to the air filter, so it must be a very small unit placed very low on the tower. alterntively, it could be forward of the tower and placed low opposite the compressor
cant believe it - a million photos of z on the net and not a single one of this setup
anyway, i will post some pics soon. i've just about finished the evaporator housing