Welcome to the forums, ModelMunky!
try this page:
http://www.diggerhistory.info/pages-armour/allied/bren_carrier.htm
http://members.rogers.com/rcd-guild/brenphotos.html
http://www.angelfire.com/art/enchanter/bren.html
here is a model:
http://idfmodelling.free.fr/kit_brengun_01.html
http://www.verlinden-productions.com/vp_htm_0801_1200/vp1042.htm
just type bren gun carrier in google.com and go exploring!
welcome to 'the dark side' (the armor forum)