OK. Thanks for the guidance.
So, I can just use the jumper points on the board (holes adjacent to the header pins) to go to the Mega SPI pins?
I hope that's clear, I don't know the terminology for these things.
Is it better to just cut the header pins off for pins 11, 12, & 13? I hope to run this at some pretty high communicate rates, so would having those pins connected to other inputs have any undesirable effects?
Thanks.