Can a plastic model be repaired?

[Alex@POD]

Long story short, my models were "stored" on a desk next to some boxes following a house move, one box fell on them and there is heavy damage. Most notably the bodyshell of a Tamiya Porsche GT1 is cracked across the roof.
Do I have any chance of fixing it, or I am better off just getting a new one? It's only a £25 model with special features or added extras, but I can't bring myself to just throw it away...

I might try and make it into some sort of workshop diorama maybe...

[Brigand]

For a cracked roof, well I'd pry open the crack, glue the sides then push it back together, holding it shut with tape. That'll do the trick. A more robust repair would be the same thing but with some plastic glued to the underside to create more strength.

Filler on top would eliminate any sign of the crack when sanded and painted properly, job done.