Help with new Conti radio

[Allegro]

I bought a new Continental head unit (CD7416UB-OR) to replace my CDR220. I wanted just a plug and play and thought this would work (car is '02S).

Two problems: 1. Once the new radio is plugged in it powers on fine, but no sound. I'm wondering if my car has the M490 amp. It isn't directly listed on my options, but I do have option P63 (sport package) which Pedro says includes M490. So probably I need the ISO audio/power harness? If anyone can confirm that would be great.

2. The new head unit will not insert all the way into the dash. *&^@%#!#%* Although it seems to be, if anything, very slightly smaller than the CDR unit, it goes in about 3" and is getting hung up somewhere. Anyone have any ideas?

Thank you,
Stephen