Even though the OP has finished his install, for reference, here are a couple of pics of the newer factory grab handle and trim installed on a 98.
The gap at the top due to a possible difference in the headliner contour:
And the rivnuts that I used to mount them (it looks like they came from McMaster Carr):
Although I thought I would use them more, I actually don't need them to climb into the van (stock 2WD height) and probably won't bother to install them again if our next van doesn't come with them.
Robert