Cologne V6 sump ?

[waynes world]

The 2.9i V6 i have was from a sierra 4x4 so i swapped the 4x4 sump for a 2wd sump, but the 2wd sump has little dimples stick upwards, the 4x4 sump doesnt

Is this how they are and built in spacers or something for the cork gasket?.
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oh and i am sure, but i am looking for a sump gasket, the ones i have found are for the 2.8i and the 2.9i are twice the price. as £10-£22, i can use the 2.8i gasket as the same block?

cheers

wolly