1970 Duster Hood Question

I wanted to ask what year hoods will interchange with the 70 Duster?

I'm thinking 70 and 71 are the same and then 72-74 are the same. I'm looking around for an original hood for when and if I get this 70 Duster 340 clone. I only say "if" because I dont want to jinx it.

I did find a 340 block last night, will update in my 340 Clone thread.

Thanks everyone.