As a pratical matter without appropriated funds to investigate--the restoration for felons disabilities (specifically firearms) cannot happen. You can legally file using PA state processes, but you'll not get approval from the federal government until Congress appropriates money--which they have no intention of doing.
READ THIS BEFORE CALLING OR EMAILING ME: I am licensed to practice before the state and federal courts in Virginia. We have not established an attorney-client relationship unless we have a signed representation agreement and you have paid me. I am providing educational instruction only--not legal advice. You should speak with an attorney to whom you have provided all the facts, before you take steps that may impact your legal rights. I am not obligated to answer subsequent emails or phone calls unless you have hired me. I wish you the best of luck with your situation.