The FBI and NYPD busted a four-man homegrown terror cell Wednesday night that was plotting to blow up two Bronx synagogues while simultaneously shooting a plane out of the sky, sources told the Daily News.

The idea was to create a “fireball that would make the country gasp,” one law enforcement said.

Little did they know the plastic explosives packed into their car bombs and the plane-downing Stinger missile in their backseat were all phony - supplied by undercover agents posing as Pakistani militants linked to Al Qaeda.

The suspects - three U.S.-born citizens and one Haitian immigrant - at least three of whom were said to be jailhouse converts to Islam, were angry about the deaths of Muslims in Afghanistan, sources told The News.

“They wanted to make a statement,” a law enforcement source said. “They were filled with rage and wanted to take it out on what they considered the source of all problems in America - the Jews.”