Not knowing how PA law does or in this case appraently dosen't work. I would think since it is a special construction you could treat the original title as a bill of sale for the components and simply apply for a new title as a newly constructed vehicle. In worse case "sell" the components to someone else sibling, trusted friend, etc. Then after a short time that person has constructed a new special constructed car and titles it then "sells" it back. Wordy but does that make sense? Look at
Titling a Kit car in Pennsylvania