i think i need a new parking safety switch so that my car will start where is yhis located and how much do they cost$$$
also i get a rumbling from 25-30 mph like driveline my mech said known prob. for these cars and prob. nds. a new driveline sounds suspicious to me? he says they dont make a new joint i have to buy a whole driveline for 500$$ what about flex disk or mid support berring please help dont want to get ripped off!

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1972 280sel 4.5

If it is your driveshaft, speak to a local driveshaft shop. Chances are you can get it rebuilt for much less than replacement cost for the whole thing.