Benz ml430 factory head unit stuck..
 

hey,
im trying to remove my factory bose head unit in my ml430 (2000) and put in my after market panasonic head unit along with my amp and sub. i get the left side off but the right side wont come out. is there any way to remove it? if i took it to my dealer would they remove and install the new head unit for me? has this happened to anyone before? if i pulled it out really hard, would that break my dash? how much would it cost to get a new dash?
i came across this removal key for european cars at www.cartoy.com. would you suggest i use those?

pnoymoomoo,
Yes to obtaining the radio keys

The radio keys push the locks inward to facilitate removal of the dash unit. Pulling the keys outward helps to push the locks further and helps on the tight ones.

so that should get my head unit out? oh and also would i need a special wire harness cause of the bose system?