Grumpy_Mike:
My motors will be running 5V PWM from the l298 @ 3.9KHz. Can a voltage level converter run this quickly?
Yes voltage level converters can run at as fast as the arduino can throw stuff at it.
Thats great, I will look into a voltage level converter, as well as this tutorial mentioned below.
Hello Massimo - I am looking to purchase multiple Dues and UNOs. My research institute is located in Canada but I am open to any distributor. Where can I purchase Dues without getting capped at 1? Also, hopefully the Dues and tutorial will be up shortly - if you have any time intervals that would be great! As well as where I can look for these videos.
Also, side note: I am hearing weird things about the external interrupts on the Due. Forums are saying 0 and some are saying 8. If someone can clear this up for me, that would be great 
Daniel