Umm...you've got the wrong Ju 87. The G-1 and the G-2 were the tank busters equipped with the 37mm cannons, with some D-3s and a handful of D-5s converted on the field to G-1/G-2 standards.
The D-2 was a glider tug and was intended to be a tropical version of the D-1 but was so over loaded with armor that it adversly affected its performance. Because of this the Luftwaffer high command to place no particular value on the production of the D-2.
ack-ack
Actually Ack-Ack, look the the OP...Ju-87 with the Bk 37 anti-tank gun. Ju-87G-1 or G-2, field converted or factory, still not a D2.