Front Disc Offset

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I've just got some 4 pots from an MG. But I'm not sure they are going to fit. I think my only chance would be fitting a disc with a different offset.

 

So my questions are (and I've searched a lot and got bogged down with Brembo fitment etc!) what is the offset of the std 1.9 disc? And...

 

What other discs are available in the 283 - 305mm range and what offsets can I get! I think(!) I need a disc with has as close to zero offset as I can...

 

So Ideally I (think I) want a 283mm disc with 0 offset. Does this exist?!