70-71 air cleaners are pricey, but not that pricey. I saw 3 or 4 at Carlisle last year for $4-500 depending on how much work was needed. The key to looking good (IMHO) is a nice new pie tin on top, even if the air cleaner isn't exactly the right year. This one is on my 1970 Dart GT, and the other side of the Pie tin says "318"
View attachment 1716220299