(a)  General rule.–Whenever a person subject to a valid decree of a sister state or territory for the distribution of marital property or for the payment of alimony, temporary alimony or alimony pendente lite, or the property of that person is found within this Commonwealth, the obligee of the decree may petition the court where the obligor or the property of the obligor is found to register, adopt as its own and enforce the decree as a properly issued and authenticated decree of a sister state or territory. Upon registration and adoption, such relief and process for enforcement as is provided or prescribed by law in similar cases originally commenced in this Commonwealth shall be available. A copy of the decree and order shall be forwarded to the court of the state or territory which issued the original decree. The obligor shall have whatever defenses and relief are available to the obligor in the state or territory which issued the original decree and may question the jurisdiction of that court if not otherwise barred. Interest may be awarded on unpaid installments and security may be required to insure future payments as in cases originally commenced in this Commonwealth. Where property of the obligor, but not the person of the obligor, is found within this Commonwealth, there shall be jurisdiction quasi in rem, and, upon registration and adoption of the decree of the sister state or territory, relief and enforcement of the decree shall be available as in other proceedings which are quasi in rem.

(b)  Optional procedure.–The right of a judgment creditor to proceed under 42 Pa.C.S. § 4306 (relating to enforcement of foreign judgments) or otherwise instead of proceeding under this section remains unimpaired.