WAP 5 and WAP 7 are hardly different. bas tractive power and load hauling ka difference hai. Then AJNI WAP 7 toh bhare pade hain. WAP 7 bahut hain AJNI shed mein and BSL shed mein WAP 4. Kaam Bahut sahi chal jata hai. WAP 5 majority WR route and NCR route mein chalta hai.