I don't think it's possible to port the Whole San Andreas level to THUGPro,it's a very big map.I think you can upload the SA Liberty City though.
Well, San Andreas is big, yes, but the city is split in pieces. (Also into small zones but that's on a .dat fle iif im not mistaken)
I realized after toying around with the game for a while with the gta3.img file and the MEd (aka
Map
Editor, not a very original name, i know, lol) tool, everything is separated.
So in response to skatefilter5: Everything is separated, it can't be a piece of cake unless you manage to import to blender/SketchUp the whole area code which i think it was located in the /data/ folder, if you get what im talking about, that is.
Instead of asking someone else to do that, you should try doing it yourself cuz so far the only one who seems up to the task is me, but y'know my current status, no PC. 😕