Plenty of sun today, so I clamped the rear spoiler to the hatch along the back edge & let it bake awhile. That actually resolved much of the misshapen issues, added a clamp on top which pushed the wave that was present on the right out. Had to address the paint under the emblem also
After paint repair
The directions say to drill & use two sheet metal screws in the forward outer region, after the spoiler is taped in olace. I used the existing inner "280Z" emblem mount hole, drilled out for an M4 riv-nut, and did one on the other side to match approx 5" in & 3" up from hatch lip, prior to adhering the spolier. Those helped me align the spoiler and adhere the back edge to the hatch lip knowing that the placement was correct in relation to the lock.
I added closed cell foam to the outer fender overhangs as per the instructions (although not provided )
Need to add the 280Z back
Also heated & shaped the lower spoiler edge to minimize the wave that was present