they never made a wagon 240sx sadly, the nissan axxes is the only nissan wagon i can think of from that era and that window is probably too big. i think it would look good with 2 rear windows.

looks like a good start, that thing is a manual right? i had a auto 240sx, it sucked and to swap a 5 speed you needed everything from the crossmember to the ecu and wiring harness