Default [Q] Replacing defective mainboard

Hey Folks,

I got a Galaxy Tab from a friend that has a defective mainboard, it is irreparable. So now I want to replace it by another one.

The only thing that could fit is that one:
http://www.ebay.com/itm/Samsung-Gala...:X:RTQ:US:1123

The seller doesn't know if it fits. Can you confirm or tell me where I can find a replacement?

Thanks!!!