No Start No Spark
 

I have a '03 Miata with a stock ecu that I replaced a head gasket for ~150 miles ago. It drove smoothly except for the fact that it died when it got hot. I replaced the Cam Angle Sensor thinking that was the problem. The car drove fine for about 15 miles until parked at a home depot, when I went to leave the car didn't start.

I am getting fuel, I replaced the CAS sensor again thinking it was defective, I replaced the main relay with a known working, and I replaced the Crank Position sensor. I replaced the crank position sensor cause I figure that may be why I wasn't getting spark and because I noticed the tach doesn't move when I crank the engine.

Any next troubleshooting steps I could take?