Your Z32 probably has broken or missing door vent trims. Even if you find uncracked OEM ones they'll crack eventually just from being so old. These are a replacement pair that will clip right into the OEM spot. They're also much stronger, printed in a high temperature resistant material that will never warp, crack, or fade. The clips are three times thicker than OEM and also reinforced on the sides. The entire trim is much thicker in general. 
 
Vents are not included, these are the trims around the vents only. 

You can also choose between a smooth finish or a textured finish. An OEM option with a "leather" texture will be coming shortly as well.