The link I sent you was listing internal fuel for all models of A6M along with the capacity of the typically used drop tank.I didn't mention external tanks, Ivan. The 134 gallons above is all internal. It is also A6M3 Model 32.
I can certainly find out the fuel capacity for the A6M5 Model 52 since we fly one, but I'd not bother the people about it until the airshow was over ... which it was 2 weeks ago. So, this weekend is a good time to ask and we HAVE the information if only the correct people are around on Saturday.
There is a little more detail on internal arrangement of tanks further down in that thread.
I posted this data about 5 years ago. It is from a translated copy of the manual captured on Kwajalein.
You don't need to bother anyone on Saturday.