No first hand information but with a little google-foo:

https://www.profitautointeriors.com...r--1972-Barracuda/10055071/BUN72KEU.html
https://www.musclecarparts.cc/shop/item.aspx/1972-1974-e-body-front-bucket-seat-foam/10025/

oddly Legendary lists foam buns for 73-74 and when checking fitment on 72's their website says does not fit.