I also was surprised to hear the impalas have a bad insurance rate.
They get great mpg for their size and hold up well both in wrecks and mechanical wise.
Any how I can tell you what not to buy.
Anything with the CVT transmission.
Take a look under the car at the shifter side of the trans.
Many tail shafts have both a B and E mounting points.
If you have 2 mount points and are currently using the rear most one you can correct your shifter position.
You would have to purchase B body shift arms/ levers and move to the...
Sorry your dad passed away.
Not sure about your area supplier but I have one out of date tank and as long as I just get it refilled and take it home it's no problem.
But that said, to be safe best to get them tested,
Victor .regulators are pretty darn good, they may have survived the time...
I like the lights set into the roll pan better. I would remove the large clear back up lamps and use a tail / stop light that has a small back up light lens in the assembly.
Bought these at a swap meet last week, I'm pretty certain they are pre 68 but not sure of the application ?
The 4 separate plug wire lumes make me think C body or truck.
Thanks for any help.
Also , yes I have search some on google.
Try these guys, if they do not have it they might have some ideas of were to look.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://upholsterysupply.com/&ved=2ahUKEwjKzd30gtL9AhUukIkEHa6kDDAQFnoECBMQAQ&usg=AOvVaw23LNQsXbj_QSwq0aQGYCQ6