So there is some artwork available on eBay.com (original marquee & control panel stickers, guy wont ship to UK so cant buy and scan
)
Also a guy who is selling side art (dont buy this) seems that its a poor repro to the original, it may suit your purposes but not mine. There is an ongoing project for people to get this artwork and clean up but seems to be a while away still
If anything comes up in the UK, I will check it out and hopefully scan some.