Hi, Has anyone purchased and modified their head units using Dig Options? Here's the link to the unit: http://www.digoptions.com/Toyota_In_Dash_Multimedia_Navigation_Car_Stereo_p/avn11tp.htm How did it go? any challenges encountered when installing? Was planning to buy one, am just concerned with the reverse camera connection, if it will have issues incase changing the stock head unit. Cheers