yes it is possible(i'm pretty sure) go to the paradrop section in the .ini file and just replace the names of the infantry with tank names....not sure if this will work but try it :/
Directly change SovParaDropInf=*(* means a type of tank) to make it drop tanks will get a strange reslut -- the tanks can't be seen,and can be cushd by the tanks with Crusher=yes tag.