Zenith Cromacolor 2 or System 3?

[tritwi]

Hi everyone.
I just had the luck to find this beautiful Zenith tv in my country and find those magnificent pieces of american craftmanship is not easy here.
Unfortunately the tv doesn't work. Inspecting it before giving it power revealed a blown out electrolytic. I removed the horizontal module (9-153) and found several other components dead. I'd need to know the exact type of the chassis. Informations found on various sites gave controversial advices. On front side there is clearly marked "Zenith Chromacolor II" but it has not the usual Chromacolor vertical or Horizontal chassis. It has a large power transformer but this chassis resembles much more to the System 3 chassis.
I found several NOS replacements for the horizontal module (9-153) but it appears there are several types of the 9-153 module. I found a 9-153-03, a 9-153-11, 9-153-12 and 9-153-13. Which one is the correct one? Any advice from you Zenith experts would me more than appreciated. I would like to restore it at its best as it witnesses a time where things were made to last.