Magnum swap starts, does not run

Okay, did some more poking around today. Pulled all the plugs. Each plug smelled of gas.
I then checked for spark at each plug and this is where it was weird. I had spark, but not a consistent bright spark. It would alternate between bright and dim spark randomly. Not sure what controls the strength of the spark other than the coil.

Any ideas on what I should check next?

Non consistent spark would definitely cause what I was seeing yesterday.

Thanks.