Ok. This is straight from the 70 service manual for my 70 Barracuda.Under the "Low gloss finish colors" the line reads" Dove White, Chrysler code AB5EW1, Ditzler code-DIA 8745, Bucket seat hinge cover. Here is the label from the paint I used. It is a PPG paint but the cheaper Omni line.It is a base coat/ clear coat designed paint. You can paint it without the clear for a low gloss. You are supposed to add a small amount of an additive that make it tougher when you don't use clear. It is very expensive and I was only going to use a very little in the paint, so I did not buy it . The paint guy said it would be fine in an interior application.
** NOTE*** the code your are looking for is the W1. That is the one that will help the store mix the correct color. It is a common exterior color for 1970.