A longer answer is NO they are not the same.
The MG2 track and early MG5 have a lighter cast form and additional profile on the outer edges.
Late MG5 and MG6 have a heavier cast form and a slightly increased drive wheel engagement tooth.
MG6 (ITC version) and MG40 has a deeper section and deeper drive wheel engagement tooth.
Add to this the possibility of having broached holes in the outer edges for swamp block bolts and the ITC and most MG40 having a wider ground contact tooth than the agricultural version there are a lot of combinations.
Late MG6 onwards track does not fit MG2 very well.
MG2 track will not run well on later machines and may cause drive wheel jump and easier for the track to come off.
Neil
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