I agree you guys, better to build a new f/o kit. The Sherman and Tiger I are the most popular TBU club tanks. They also seem to be the best of the bunch for ease of build and maintenance.

Adding all the FO mods to an older Tamiya Tank usually exceeds the cost of buying almost any Tamiya WWII RC FO Kit NEW. It is something to do for fun, not profit.

As I suggested, the tanks work great, but if you go down this modification road with your Tamiya King Tiger, it can get expensive over time, so be careful.