Can anyone make this model printable?

[SonofRojBlake]

I have a model of Disaster Area's stuntship from Hitchhikers Guide to the Galaxy. It's intended for onscreen use, not printing. It's hugely detailed and huge (scaled at over 3 metres along the long axis).

I'd like to print it at 200mm or so along the long axis, but the model is borked and I don't know how to fix it.

Is there someone who could fix it for me, or can someone recommend a tool that can do so relatively simply? Some of the bits are very delicate (e.g. the dish on top) and might need beefing up a bit. I have NO idea how to do this and would be prepared to pay a reasonable amount if I can get two printed copies at the size I want. Any ideas?