The J7W2 Shinden-kai was to be a jet powered version of the J7W1. The radial engine was to be replaced by a 2,000 lb thrust Ne-130 turbojet. The type was never constructed but would have been a logical progression. A similar conversion from piston to jet aircraft was done in Sweden when the Saab J-21 piston engined fighter was adapted to a jet engine and produced as the J-21R.