Mamba Max fan??

[sleebus.jones]

Two fans doesn't make much sense to me, particularly since the heatsink is bonded directly to the FETs, where all the heat is generated...and they're only on one side. Not to mention your mod will most likely void the warranty. There are people running HUGE motors (Neu 1527 1D) with the stock setup and have had no heat problems.

I'd run it first before hacking the crap out of the case.