Not quite the same size, and they are one piece, so you have to do some minor cutting with a stanley knife (what I think you americans call an exacto knife???) Anyway - there is a write up, but the link seems to have died. i saved it as pdf on my home PC, so I'll try and remember to find it and post it up. The trick is to remember to get the white-based (i.e. lighted) switches, and the ones with the flat bezel frame as the curved ones won't sit nicely on your flat e30 console. When you see the curved ones you will know what I mean.
Anyway, I'll find the write up and post here.
It was orginally linked in a thread on
www.r3vlimited.com in the Appearance>interior forum.