Maradona, speaking to local radio station FM Metro, said Argentina will play with four centre-backs and Jonas Gutierrez and Angel Di Maria on the wings at the tournament in South Africa.
He added that 20 players were sure of a place in the squad for the finals starting on June 11. Argentina meet Nigeria in Johannesburg on June 12 in Group B which also involves South Korea and Greece.
"I tried out lots of full-backs, I tried with (Javier) Zanetti, (Emiliano) Papa, and I finished up with four central defenders," Maradona said.
"I think I'm going to play like that, they're the ones who give me guarantees at the back. They didn't concede a goal and (Germany) didn't create any goal chances," he said.
Apart from the recently recalled Inter Milan defender Samuel, it was also Maradona's back four in Argentina's final qualifier, a 1-0 win over Uruguay in Montevideo in October that secured their place at the finals.
Maradona said Jonas Gutierrez, "who gave me a lot" on the right, and Angel Di Maria would be his wings as against Germany.
"I spoke to (Gutierrez) and reassured him that even if he went down to the C (third division) with Newcastle I was going to take him," he said.
Asked for more details and whether he had already settled on 20, Maradona ran through some of Argentina's biggest names, saying: "'Masche', Veron, Tevez, Messi, 'el Kun' (Sergio Aguero)...Yes, we're there."
