Lots of differences between a M2 and a model 65. The 65 was a longer car with a 110” wheel base (M2 107” wheelbase) and the 65 had the bigger nicer 15L 6 cylinder flathead inline continental engine (47 HP) with a factory oil filter built in on the passenger side of the engine. M2 only had the smaller less horsepower (36HP) W5 4 cylinder continental engine. Also another kind of unique thing about the model 65 is the very sparse amount of louvers on the hood (except touring cars with double set of louvers). Maybe only half the amount on all other Durant made cars. The 65 also hade all four gages on the typical higher priced Durant cars and the M2 only had two gages and no fuel gage of any type. The model 65 also cost a lot more. Hope this helps you.
Later Lance Haynes