WOW! Congratulations Zane! Was my M&M clue helpful?
The rare and hardly known US Navy Martin P4M-1 MERCATOR with two 3,250 Hp P&W R-4360-20A Wasp recips and two 24,610 lb st Allison J33-A-10A Turbojet engines operated in the Cold War era for maritime patrol work only with VP-21 starting in June 1950. They replaced the US Navy's PB4Y PRIVATEERs
These were originally designed for maritime patrol work but were converted to P4M-1Q radar reconnaissance intelligence aircraft, spying on Soviet and Chinese radars. VQ-1 then operated them in the Pacific and VQ-2 operated them in the Atlantic zones. They were retired from service in 1961 after one loss-one shot down and another fired at.
Specs: Max speed: 409 mph at 20,090 ft.
Range: 2,833 miles
Service ceiling: 25,145 ft
Max Weight TO: 88,194 lbs.
Weapons: 4 20mm cannons, 4 .50 cal machine guns,
up to 5,988 lbs bombs
Wingspan: 114 ft
Length: 86.6 ft
Height: 26 ft
Wing area: 1,310 sq ft
And yes, the weasel bit was the total engines number, recip (plus jet).