well I guess by dedicated you mean the full art package.
Samurai showdown II is the most well know
Irratitating maze is dedicated and
I have seen a magical drop II at a auction.
"art for the control panal, header, side art"
I have seen for sale several full marquess for different games. but due to the nature of the neo really a dedicated cab is just a dress up MVS cab. The only actually dedicated cab you can say would be IM since that is all it can play. but Im sure the sold SSII as a dedicated from the shop.