In-Ceiling Rears for HT??

[chgo36]

Any ideas for inexpensive in ceilings for rear surround. I have Mirage fronts and subwoofer and Yamaha RX663 AVR.
I have two matching Mirage for rear but having trouble running wiring to the back wall etc.
Any help is appreciated!!

[mazersteven]

Mirage
Omnican OC-65
http://www.miragespeakers.com/na-en/products/omnican-oc-65-overview/

http://www.vanns.com/shop/servlet/item/features/546375440/mirage-omnican-oc-65?v_c=GoogleBase

http://www.crutchfield.com/S-H8XSN9U4JIY/p_653OMCAN65/Mirage-OMNICAN-OC-65.html

http://www.onecall.com/ProductDetails.aspx?id=92208