Laurent:
Based on the code YF-D and name "Sweet Stuff" I think this P-51D was from the 8th AF Second Scouting Force based out of Steeple Morden.
I found online records (at
http://www.littlefriends.co.uk) that suggest this was s/n 44-11341 and assigned to Cap. George Ceglarski, but there appears to be some confusion as to the serial between the ship shown in the picture you linked Capt. Ceglarski's later P-51K "Sweet Stuff II." The Little Friends site also has a picture of Capt. Ceglarski with the later ship.
Fold3 doesn't have an MACR for Ceglarski, so it seems likely that another 2SF pilot was flying YF-D on 2 April 1945.
Hope this helps.
Best regards,
Paul Dame