Damon Dash has been writing a sequel to “Paid In Full,” his 2002 movie based on Harlem drug kingpin Alpo Martinez — but he had been struggling for an ending until the real-life Martinez was shot dead in Harlem on Sunday.

Now Rock-A-Fella records co-founder Dash tells Page Six that he’s ready to start making the movie.

Martinez, who was rattling on his associates following his 1991 arrest, was shot five times during a drive-by.

“‘Paid in Full’ is a reflection of everything I’ve learned and I am really going to see it through now that there’s an ending,” the 50-year-old Dash, who produced the original, told us.

“So this is going to dramatically change based on what happened Sunday. I was stuck on how to really approach it and this is actually giving me more clarity.”

“‘Paid in Full’ was a classic. To even touch it again, I got to come better,” he said. “So the story got to be straight. Everybody’s thinking it’s got to be tight, and based on the fact that I have creative control, I can do things the right way. S–t’s going to be incredible.”

He said the movie will be partly based on “Crack Era,” the memoir of Harlem kingpin Kevin Chiles.

“A lot of it talks about the environment and what a lot of people were going through. I just like the way he broke down the mechanics and logistics of hustling,” he told Page Six.

Martinez was sentenced for murder, drug charges, and conspiracy to commit homicide. He was released after he agreed to testify against Harlem drug dealers. Martinez was also subject to witness protection as he testified against his drug dealer associates.

Dash said that he heard about his death first when Andre Carson, an Indianapolis congressman, called him.

“I mean a lot of people hit me up with the news but Andre Carson was the first to hit me up,” he said, “so that is when I knew that the culture and the film… had made a major impact.”