Legendary 66 barracuda seats questions

I have purchased both front and rear vinyl for my 66 Plymouth Barracuda from Legendary a few years back and set them aside for. I had a set of seat foam pieces for the front seats that were sold by PUI since I did not see the foam on the legendary site.

Now I see the foam listed as 66/67 a/ b seat foam. As well as the horseshoe shape pieces listed separately for the barracuda seats. I want to confirm that both of these items are required. And that the seat foam set is not the exact set I already have repackaged. I hear that there has been some dissatisfaction with the PUI seat foam.

I searched through the Legendary YouTube instruction vids and find that the 66/67 barracuda is not represented. Up to 65 and 68 and newer…This makes me ask what the differences would be… from , say like the 65 dart or satellite vid? Or the 68 and later.

I am fairly confidant in my abilities to handle this but the omission of these years gives me pause.

I will continue to prep and paint the frames while I wait form confirmation from the manufacture/venders... and BETTER YET, the customers and knowledgeable peers of this venerated forum!