• The holder of a current and valid PPL(A)* issued by an ICAO Contracting State (not being a JAA Member State), who has flown a minimum of 100 hours as pilot of aeroplanes, is credited the JAR-FCL PPL(A) flying training/experience requirements, except the PPL(A) Skill Test.
• The holder of a current and valid PPL(A) issued by an ICAO Contracting State (not being a JAA Member State), who has flown less than 100 hours as pilot of aeroplanes, but meets the JAR-FCL PPL(A) flying experience requirements (as per JAR-FCL 1.126B) is credited the flying training, except the PPL(A) Skill Test.
Which means that assuming you meet the 100 Hrs requirement you still need the Skills Test in addition to the ground exams.
Above taken from
C.1.1 of LASORS
That will get you the JAA PPL. How many hours do you think you will need to pass the Skills Test?
Of course if you don't have a current BFR on your FAA PPL you'll need to get that first as well so as to make it "current and valid"
Mike