Mating the turret to the tamiya was not that difficult and worked out very well. Here are some pics of the build:

The Plan

Modifications to the Tamiya rear deck.

Exhaust diffuser (I believe that is what it is called)

Modified one of the Mato turret hatches with the tamiya one.

Tamiya turret ring installed on the Mato turret.

Here she is all painted. I have since installed a canvas mantlet dust cover.
She is probably my favorite tank. My wife's name is Catherine too... which probably softened the blow when I told her how much it cost to build.
