Flxible Metro D

Is it possible to convert the models in this file for use in gmod?
http://repository.rigsofrods.com/files/mirror/geoselect/FlxibleMetroD_1.zip
Flxible Metro D There is models in the pack for the bus.

Haha, i love fooling around with that bus on ROR.

I do to but it would be even more fun in gmod!