Hi, I will soon take delivery of an A6 SE with what I believe to be the basic MMI unit (screen embedded in dash, controls in centre consul) with a single CD box in the glove box. What upgrade options are available without major surgery? Can I fit my Phatbox in place of the CD unit? Can I fit my Parrot 3100 easily? Any suggestions, tips or tricks greatly appreciated. Please check out my old A6 in the classifieds.