69 Dart/Barracuda 340/383 tail pipe size?

In 77 or 78 I bought new tail pipes for my 70 340 swinger. They were 1 3/4. I had headers and went back to full factory exhaust. The front pipes were 2 1/4 on the pass side. The front half of the drivers side was 2 inch to go around the starter and between the T bar then stepped up to 2 1/4 inch to the muffler. Kim