Hiya Spyder, I had an hour to spare and got interested, sadly this is all I've come up with.
Of most interest is that your PT201 became RN MGB 181. (not got time to look any further as my "turn" on MY P.C. is over!!?!)
Higgins Ind New Orleans,LA 78'
PT 201 Laid down:- 6/30/42 Launched:- 10/03/42 Completed 1/20/43
Fate:- RN MGB 181
PT-201 - PT-200 class Motor Torpedo Boat:
- Displacement: 43 tons
- Length: 78'
- Beam: 19'11"
- Draft: 5'3"
- Speed: 41 knots
- Armament: 4 21" Mk XIII torpedoes; 2 20mm; 1 40mm
- Complement: 17
- 3 Packard gasoline engines, triple screws; 1,200 hp
- Built at ___ and commissioned 1942-45
- Transferred to UK