tnker101:
i was just reading about how a company called Castoff has released a Romor up-armor package for the TrumpeterChallenger II kit w/ reactive blocks and side skirts, front and rear mud flats, front armor blocks and additional parts for both sides, available from F & F Models (www.fandfmodels.com) in the UK or email terry@castoff.freeserve.co.uk.
Accurate Armour's add-on was designed for Tamiya Challenger I and is a bit different than version used in Gulf War 2003, but check out www.accurate-armour.com if interested.
HTH and good luck from a fellow challenger fan !
frosty