I'v downloaded this J-7/F-7 pack by gerald14,these birds are cool,but there is also some mistakes
For the J-7IIA/J-7IIM/J-7M/J-7MP/J-7P/J-7MB/J-7N,These can be used by one modle
But not similar to the typical mig-21f/f-13s.The pilot tube of J-7I/F-7A/J-7II/J-7B are longer and under the nose.But the for J-7IIAs,is short and on the side of the nose.
For the J-7Es,They are based on J-7IIA,and with double delta wings.
Some Pics
J-7 I/II http://www.afwing.com/images/j7/J7II.jpg
J-7 IIA http://www.afwing.com/images/j7/j7iib.jpg
J-7E http://www.afwing.com/images/j7/10.JPG
Wait for more Chinese birds..