[SD/Modeling] Need help rotating building to be 270 degrees

[Manastorm]

Hello everyone, I was wondering if anyone could help me change the model of these buildings so that it is rotated 270 degrees like most buildings instead of facing upfront.
I tried doing it myself but I ran towards a lot of issues trying to get Magos' Model Editor to work.
Thank you!

 

[DREADMAN]

Okay
Edit:
Emmmmm....
Your models don't open in Magos,Matrix eater.
Can you throw off their textures?