Problems starting my new 408

I can't get it to start at all. I've gone back to basics, it gets plenty of air as it has no breather on it due to these issues, I have visually verified spark from the #1 plug boot, has good compression and spins at a good speed, until fuel gets in the cylinder. Possibly fouled plugs? I didn't pull a plug and verify spark there, I will try that tomorrow. I can't seem to think of another scenario that explains it. This car continually fights me and I'm running out of hair to pull out lol