2 variants of a part, with linked dimenions?

Hi,

I was wondering if this is possible: I have a part which I want to copy and I want some slot cutout dimensions from the original part to be linked to the same slot cutout dimensions on the new part, so that if the original part is updated, those linked dimensions update on the copied part.  Kind of like how it works if you mirror a part, the mirrored part will update if you update the original.  I want to do it this way (and not configurations) so that i have 2 separate part numbers (and file names).

Thanks for your help!

Dana

SolidworksParts And Features