Bird Parts

#3
Anyone know where i can find a set of rims like each of these? With or without tire is ok. Found these photos online. From an early 70's Bird Minibike. Thanks in advance.
If you look at the pics closely the Bird rear wheel has a hole on opposite side of sprocket, no idea why , it easily can be welded in and that's my plan if I ever use it for a restoration project , but for a rider the tube works fine . The sprocket is wore as it should be for its age. The front wheel I'm not sure if it's off a Bird but it is vintage steel wheel 6"
 
Top