I believe this is the only B body bigblock header that fits a A body fairly good.
http://www.bigblockdart.com/techpages/BBody.shtml
they are 1 3/4" hedmans and they seem to almost fit.
2" b body hedears are more likely to be usable as partsbins for building a set of A body headers. think of them as something you could cut up and put togheter again but you will probably need a few more pieces than what comes in the box so to speak.
