70 Dart S6 to 383BB conversion - Cast Iron Manifolds

Hey Guys, Need guidance/thoughts if possible. Many of you (I think) indicated that B body HP manifolds would work on my 70 Dart project. It's 383 4spd with manual steering box. I'm on low budget and not concerned with the performance difference of headers vs. the HP manifolds. Just want to confirm that many of you said the B body HP's will get it done for my 383 4spd project. Does anyone know if there are variations of these manifolds? Meaning 1970 may be of different angles than 1968 or 1972? I've found a local guy who has a nice good condition set for $350 but, I'm not certain of all the facts with my application. Any help/thoughts are very much appreciated. Thanks!

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