My car is stuck in a parking lot a few miles from home.

I inserted key and it would not turn. I tried spraying some penetrating fluid in and jiggling but no luck.

So am I in for a major ordeal? I have been reading here for the last hour and searching for solutions. Looks like my best bet is to get car towed home and work in my garage.

Can I access from under dash? What will I need to take apart? I read an article where the instrument cluster will have to be taken out to access. Can anyone give me guidance to get me started? Also, where to buy parts? I understand I can buy a used unit but will have to use the key to match.

__________________
'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R