It seems that many people are interested in twins, but the manufacturers are not listening.
Here are some of the previous answers.
http://www.rcuniverse.com/forum/tm.asp?m=989022
http://www.rcuniverse.com/forum/tm.asp?m=1011897
http://www.vqmodelaircraft.com/
http://www.rcuniverse.com/forum/Twin...1065089/tm.htm
www.ne-aero.com
http://www.kmp.ca/esm/products1.htm
http://www.picaweb.com/
http://www.atimanufacturing.co.uk/
and several others.
Good Luck,
Twinman