I'm doing 2 Playboys currently and had the same issue with the stencils but Jeff from Classic Arcades has some listed on eBay. Just search for "playboy stencil" and you should see them.
Only 3 sets left as of today.
I'll post my resto when it's done.

Almost forgot...
Very nice job Beatmaster!
I'm hoping mine comes out as good.

I also repro'ed the cards in the head and cabinet so I would have nice white ones in there instead of the crappy brown/yellow they turn into.
It seems a lot of us have the same ideas when restoring a pin. I added some detailing inside the cabinet similar to your's and Mike's (pinballmike).
I have played Mike's and it is beautiful. Plays like butter with the CPR PF and looks amazing in person.

I was going to clear my cabinet as well but was afraid it would look too glossy and then I saw this posting. It looks great in the photos!
How do you like the look of the finished product? Do you think you would do it again?