1992 bonneville ssei ignition cylinder removal and questions
 

I am thinking on buying a 1992 Bonneville ssei with 150'000 miles on it. the problem is that the ket broke off in the door, and we either need to replace the ignition cylinder or hire a locksmith. my though is to replace the ignition cylinder, but arent sure how to remove it without having the key in it. Any ideas before i make any calls? Also, I am wondering if there is anything that i should be inspecting or possibly changing in a car of this age and miles.:)