If they were ordered for your car, the plugs shouldn't be a problem, but if you are skeptical of your plugs, the autolite coppers only cost about $12 for 6 and they definitely work. You can always put the ngk's back in once it is running.
If you have spark, adequate fuel pressure and your timing is close enough, the engine should start. It's not that complicated. Compression is the only component left to check.
Spit and sputter? Does it show any signs of ignition, such as popping or backfiring? Have you checked for spark from the other coils? Are the spark plugs wet or dry after cranking for a few seconds?
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