Early War
G7a T1 Lut II, Ka, Pi1 Kurz
G7a T1,Lut II, Ka, Pi1 Lang
Late War
G7a T1 Lut II, Ka, Pi1 Kurz
G7a T1,Lut II, Ka, Pi1 Lang
I get the point with early/late war, but just for the record:
"Early" versions might have been used throughout the war.
I don't remember now when Lut II was fielded, but certainly not early in the war. Torpedoes could not (without major rebuild, which I doubt was ever done) be retrofitted with Fat and Lut - they were designed with these features from the production.
Also, warheads might have been a mix of early/late productions (externally, it would also be hard to distinguish Ka, Ka1, Ka2, Kb and Kb1 heads: The type was often painted within a circle on the front part of the head).