No spark issue

"I am using the dark blue coil+ wire for my 12v ign source for the box"

This is likely not your problem, but you need to hook the MSD 6 box big black and big red straight to battery. The small red on the MSD is what hooks to your switched power

There is no doubt that ANYTHING can be defective out of the box. Sounds to me that unless you have made some serious wiring mistake, you have something wrong with the dist. You might, though, check and make sure the dist. is actually GROUNDED And you did not say, I would check it "hot wire" style, that is jerry rig power wiring to eliminate the vehicle harness "to test."

I assume? You have been to the MSD site for the test destructions