Any one have a modern paint code for a 1966 paint code?

GM FABO crew;

I decided to bring my 1966 Barracuda back from Black to the factory silver.
I need to double check the fender tag but I believe it is a AA-1 Silver Poly color.
I tried to bring that to my local paint supplier and they turned me away because they said that number is no good anymore but If I can switch it to a Lessonal number ( a name of a line of paint like what I new was Dupont or PPG back in the day)
OR
Find a newer paint color I like and get the paint code from there.

I looked on this site and a few others (Sorry Joey I did go else where) for a cross over paint chart and was unsuccessful.
I want to do a base coat clear coat set up.
As long as I am asking the Bright Red interior paint is Code PP-1
A cross for that is good as well.

THank you in advance-Joe