I see Warlord have just released an Oddball's Sherman and a Kelly's Heroes Tiger. They are both resin and metal, of course. While it captures the look of the movie vehicle, the Sherman itself is pretty bad. You'd be much better off using the metal components with a Rubicon M4A3 (assuming you can still find one - or wait for the new one). Some of the metal components aren't particularly well sculpted either - especially the speaker. Having made this myself, I know how tricky it is to get the shape right. The figures look good though. I guess I'll get them for my version, although I won't be able to use the driver and co-driver. [Edit - I received the kit, and it's pretty horrible. The resin casting isn't bad, but it's a very inferior representation of the M4A3 compared to Rubicon's plastic version. The metal components are quite poorly sculpted. And there are no custom decals. Disappointing.]
The Tiger is better, as it captures the weird chopped-off look of the movie vehicle.
I wonder if Warlord are paying any licence fees for this?