OK, I don't know the first thing about these type of aircraft but,
Maybe its time to get something a little unorthodox?
Performance
Maximum speed: 996 km/h (538 knots, 619 mph)
Cruise speed: 833 km/h (450 knots, 516 mph)
Range: 8,000 km (4,320 nm, 4,970 mi)
Service ceiling: 44,200 ft (13,520 m)
Armament
Bombs: 20,000+ lb (9,000+ kg)
Missiles: AGM-84 Harpoon, ASM-1C, AGM-65 Maverick
Sonobuoys: 30+ Pre-loaded, 70+ Deployable from inside
Other: MK-46 and Type 97 and new(G-RX5) torpedoes, mines, depth charges