Before I make a mistake please help new mopar fan!!

Hey guys I'm Jim I just purchasedy first classic car at the ago of 20 as a roller. I want to put a big block in it but only found one in my area. A 413? Soy question is a 413 it's a 1970 good for my duster? I am thinking not because I don't want to spend the big bucks on headers was trying to do the 383 b body headers I saw on big block dart. Is the 413 a 440 based engine? I'm not lookin to run 11s just have a fun street car with lots of torque. So should I go with the 413? Or wait and find a 383 that runs that is high compression. Maybe someone on here is nice enough to give me a running 383? Haha lucky wishing. Anyway basically would b body headers work with a 413? I know with a 440 they won't. Also the 413 is only 450 bucks and runs like a top. Or if someone has a 383 high comp good running engine I can buy from them in the nj area. Thanks alot I love this website