Where can I find get a detailed map of city of sigil?!!!!!!!

hey building my own campaign world called star earth. Its cosmology is composed of the prime planet. riftspace and the planes.
has 3 city's. 1 planar city on the prime 1 planar like city in rift space and the 3rd city is Sigil.

the players will start in 1 of these 3 cities. making maps of the 1st 2 cities.

I need a good detailed map of sigil. the map of sigil in planar handbook is the crappiest city map I have ever seen. I dont want to have to draw out the map myself based on my playing experience of torment.

that would take to ff in long.

So please if there is anybody who can help please tell me where I can get a good map of sigil

thanks for your help