Anyone know where to look for info on buying an armored car?

not the trucks used for transporting money or the bulletproof limos politicians have.I mean like the ones used in the military.I"m hoping for one from the WWI to WWII time period,but I highly doubt I will.this isn't for protection or anything,I just think it would be nice to try and make one street legal.Please no environmentalist complainers or nay sayers.Only reply if you have a legitimate answer