Check out TANKHOBBY.com
His battle system was originally designed as a stand alone unit for static battlefield pieces like the 88.
Can use a Tamiya TBU or he has a kit to build your own.
Here is a link to a page where he converter the Denix 88
http://home.comcast.net/~chioc/88mmat.pdf
Darkith's kit is fine, but not all of us have spare Heng Long boards sitting around - like Swath