hello, try konecranes in your search. you can let them know what you want and buy a complete system, or fab the runway and gantry yourself and install the mechanical stuff that they can provide, they can provide prints if you go this route, for a price.

regards,J.J.

try Spanco. They have a wide variety of cranes. Google it

Don't know if you're still looking, but, I have a 25 non-traversing and a 25 traversing unit available.
www.gantrytrading.com
Thanks
Mike