Originally posted by InitialD
The sizes of the bearings for Nova based engines are as follows;
Engine Shaft Bearing Front
17 x 19 x 6
Engine Shaft Bearing Inner
11 x 21 x 5
These are for the "older" Nova based engines. Not based on the newer NS12 or V12 designs.
I believe you can get these bearings at http://www.minibearings.com.au 
Thanks InitialD,
I am aware of "minibearings" and their pricing seems like the usual arm and leg stuff - I am prepared to pay just the arm.
The last specialist bearing I purchased was at a saving of AU$234.00.
Anyone got any clues as to the appropriate ABEC rating for Nova rear bearings? I was told ABEC 3 or 4 was right and that ABEC 5 may be too tight a tolerance?