Will a miloden deep sump pan for 360 work on 318/340?

Just bought a deep sump pan for 360 thinking that it will work on my 340. There are 2 part numbers one for 263-360 and then a different part number for just a 360 non magnum. Can anybody tell me what the difference is? Different main cap? P#20710 for 273-360 and 20730 for just 360.

pretty sure the 273-340 is a different pan than the 360. aftermarket companies tent to mess up their listings because the 360 MAGNUM and the older 340 and smaller LA's are interchangeable. but the 360 LA is larger. anyone can correct me if i'm wrong but i believe this is what i discovered when i was buying one not long ago.