I used the Dubro bracket that is like this . . .
http://www3.towerhobbies.com/cgi-bin...?&I=LXD850&P=7
I made a new wire that was long enough to extend through the fuselage and up to the rudder with a 90 degree bend into the rudder.
I had a plywood doubler on the bottom of the fuselage to mount the Dubro bracket.
Run a piece of brass tubing from the Dubro bracket to the rudder hinge line to support the tail wheel wire.

For the main wheels, I used plywood doublers and the main gear from a H9 Super Stick 60. It is held on with nylon wing hold down screws threaded directly into the plywood.