Try pinching the socket in your Rambler to bring it back to round and to the correct size.

Usually works for me.

Modern plastic sockets, modern bulbs, cut the sheet metal right out of the donor car, tack weld or JB Weld it in and you have modern bulbs plus they are a little brighter.

I did a tech piece on several different bulbs, voltage, watts, candlepower etc. with lots of pics.

It's on both the HAMB and the Rodding Roundtable.

Titled "Light Tech."

If ya can't find it, I'll dig it out and post it here if it will fit.