Most of the syeds of subcontinent are probably fake..i know about some syed families who have complete lineage record and family history, but they are shias...
There is a whole tribe of pashtuns, mashwani who claim to be syeds....syeds are most respected people in indo-pak, particularly in south punjab and sindh they are politically very strong.,dont hide your syed identity in pakistan, you would recieve so much respect that you can not imagine in iraq.