Is there a native Solidworks model of the truggy?

Is there a native Solidworks model of the truggy? The STEP file is nice but it opens with some rebuild errors in Solidworks. It would be useful to have a native model which is setup with mates, etc.

It would be possible to do modeling on the motion and static loads of the truggy is a model like this is available.

I can work on making one, but wanted to see if one is available already.