When i installed the 4l8OE trans ,i did not want to cut the stock radio bezzel.
I found a good 1990 stock one and modified it to install the power key.
At a swap I sold the 1990 ZR-1 radio bezel to another ZR-1 owner.
https://www.zr1.net/forum/picture.ph...pictureid=4572
You may have to click on zr1.net/forum to see
John