You might be safe with the MT2 parts. I can take a measurement for you from my truck if it would help. Just let me know specifically where and what your concern is on actual size. Take a look on the bottom of the engine...I believe it actually has four holes already. Double-check before getting a motor mount.
Here is a link to the manual for the HPI MT2 that comes with the same engine:
http://www.hpiracing.com/manuals/pdf/10401.pdf