They are pretty easy to do, but they are time consuming. This old kit needs the extra attention anyways. Perhaps Tamiya will revamp this kit eventually. Making it into a kit that could be made into an A2 or an A3 would be a really good selling point for them. There isn't too many things that are different depending on the time frame you wish to model. They could take a clue from the sales of cold war armor kits of late.
We all seem to be looking for this to happen. I'm just curious as to when someone will start paying attention. There have been attempts, but not when there was any, but little, interest and so these products were abandoned in near-sightedness.
I hope we will be seeing more interest in the cold war era of armor. There are some really fascinating subjects to be modeled. i.e - all of the heavy tank projects that proved to be worthless, but they still existed. There are kits, but no accompanying figures that are appropriate.
My foray into building the M-103 opened my eyes to this era of tanks and it fascinates me that they never proved to be of any real value in their time.
Anyways, I'm rambling and I need to stop before I bore the crud out of everyone.
Thanks, Gamera. I mean to make it look heavy and I'm glad it's really looking the part to more than just me. :)
Happy modelling, my friend. :)