Saxman,
There was no N1K2.
There is the N1K1, which was a float plane fighter, that is what the "N" in the name means.
There is the N1K1-J, which was the modified land based interceptor based on the previous float plane fighter. "J" was the letter code for a land based interceptor as in the J2M 'Jack'. In the case of the N1K1-J it is added on as a "-J" and the name means a float plane fighter modified to be a land based interceptor.
Lastly there is the N1K2-J which we have.
I am guessing you were suggesting that we get the N1K1-J, of which a bit more than 1000 were built.
EDIT:
I will add a note that the changes from the N1K1-J to the N1K2-J were so extensive that they are essentially different aircraft. The wing was moved from midwing to low wing so that the complex, fragile telescopiong landing gear could be replaced with basic landing gear, the tail was completely redesigned, the cowl machineguns were removed, the ammo bins in the wings were changed to be an integral part of the wing in order to greatly enlarge its ammunition capacity. There was a reduction of about 50% in the number of parts used to make the N1K2-J compared to the N1K1-J. I don't recall reading anything about automatic combat flaps on the N1K1 or N1K1-J, but I could be mistaken about that.