Further low cost enhancements to J-7

With the introduction of FC-1, the saga of J-7 of will definitely end.

Is it possible to make some *low-cost* modifications to J-7 (the latest version with double-delta wing) to keep it viable for air-to-air roles.

The two most glaring weakness of this aircraft are range and radar. To remedy these issues, is it possible to

1. Increase the fuel capacity (by 20 to 30 percent) by either increasing the length of main fuselage, or using MiG-21 bis style fuel tank (but without effecting handling of the aircraft)

2. Increasing the diameter of the nose to house an antenna with approx. 50 km detection range without resorting to expensive receiver modifications.

Finally strengthening the hard-ponints so that two SD-10 class missiles can be carried in addition to two lower weight/size missiles.