Thanks, the shop wanted over $700 to do this job but I think they had in mind changing the entire mechanism, not the cartridge itself. I watched that You Tube video again last night, as long a I have ALL the replacement parts at the ready I think this is one job I can do that will save big bucks on the whole.
I just sunk $3400 into it getting it back up to being roadworthy after 8 years of neglect/abuse by my Dad & Brother, and since I'm the original owner and would really like to see my nephew get this car, it is all surely worth it.
No turning back.