Like you stated the 2 filters are comparable in specs, the only real difference is that the size of the M1 is a little larger. DEWFPO
The comparable specs between the two oil filters you mentioned are : Source (Wix)
Stock oil filter
Part Number: 51360
UPC Number: 765809513600
Principal Application: Massey Ferguson Tractors
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 2.577
Outer Diameter Top: 2.685
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Max Flow Rate: 7-9
GPM
Nominal Micron Rating: 21
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.460 2.200 0.230
Mobil1-103 :
Part Number: 51396
UPC Number: 765809513969
Principal Application: GM Vehicles (99-05), Geo (89-92), Toyota (88-09), Various Ford-New Holland Tractors, Suzuki (96-09), Suzuki Marine Engines
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 3.402
Outer Diameter Top: 2.685
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Burst Pressure-PSI: 400
Max Flow Rate: 7-9
GPM
Nominal Micron Rating: 21
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.475 2.173 0.233