Here's the 40 size by dubro,
http://www3.towerhobbies.com/cgi-bin...?&I=LXD850&P=0
Here's the semi scale ones,
http://www3.towerhobbies.com/cgi-bin...&I=LXRWW7&P=SM
Of course, they go up and down in size, the semi scale ones are under wheels, not rear landing gear, go figure.