Just bought new diff bearings as old ones are stuffed,they are different to the origonial ones will they be ok or pull another diff and use good secondhand ones

The new ones are angular contact ball type not deep groove, they are marked `thrust' on one side, this goes outwards.
They fit the same, but note preload when shimmed should be .005", not .001" according to the old book.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.