adding steering wheel controls to a 2006 xlt f350?
 

i've seen some conflicting information as to what would be required to add steering wheel controls to a 2006 F350 XLT
has anyone done it, can you speak to it?

i know i'll need a replacement wheel with the controls, possibly a clock spring. but i'm unsure what all is required from inside the column to the back of the radio head unit

please / thanks