Dear Tom,
First of all, Thanks! for the detailed review.
The point is, however, that one has to search for these models quite some time, since it is no longer available via the official Revell trade ways.
Their website,
http://www.revell-shop.de only shows the 2A4, 2A4NL, 2A6 and 2A6M.
As stated before in another discussion about the Revell Dingo and MAN trucks, this habit is, in my humble opinion, the reason that this superb tank does not get the attention in the modeling world it deserves. Next to the fact that only a very small range of upgrade sets are available.
So, if one wants to make a super detailled, correct version, quite some money and time is required........................