From what I can tell, both Two Crude and Gunforce were sold as kits to be installed into an existing cabinet and therefore don't really have a cabinet style of their own.
I found a downloadable manual for Gunforce. It was definitely a kit. If it would have had a dedicated cabinet, it probably would have been the standard Dynamo "cut-corner" cabinet.
Since Data East made Two Crude, probably the closest thing you could find to a dedicated cab would be the cabinets they used a few years before for Robocop and Bad Dudes. It's the one with the marquee that curves outward. I think these were the last dedicated cabinets that Data East made.
I've never seen plans for either of these style cabinets though.