Over the years I have watched people work on their cars and also watched the cars that come up for sale. Things sure have changed and I believe it is the cost and availability of parts that have caused most of it.
When watching Graveyard Carz the main guy made a statement that all of the parts that they were taking off in the 70's and the 80's they are now searching for to put back on. Lot's of truth to that statement.
I have been a Purist with my 69FB. Ever since I started driving it I made a vow to keep it at stock as possible. Man that has been a tough quest to honor for this rare 69 Sprint. Parts are very hard to find and then pry from the hands of the seller.