The chart on page 20 of the pdf shows the empty weight of the P-47 at 10,148lbs I think but I can't read it to well. AHT lists the D-25 empty weight as 10,864 lbs, and the razorback empty weight as 9957 lbs. The D-25 has an additional 178lbs of engine and propellor over the razorback in AHT, and 9957+178= 10,135!! That really makes me think that it's an early razoback D model refitted with a late R2800-59 of the 64" manifold preassure variety.
Sable
352nd FG