Don't know if this has been posted before. but trying to search an automotive forum for torque brings up alot of results
Any way I had an old HTC Inpire laying around and thought I would give it a go.
First the OBDII Bluetooth:
Amazon.com: BAFX Products - Bluetooth OBD2 scan tool - For check engine light & diagnostics - Android ONLY: Automotive
Second the mount:
Amazon.com: iKross 3 in 1 Universal Compact Windshield / Dashboard / Air Vent Car Mount Holder for Cell Phone / MP3 Player / Smartphone: Cell Phones & Accessories
Any phone suction mount will do this one just gives you 3 different mounting options
Total cost is around $45 with the app.
(The App only works on Android Phones)