Many dozens (Close to 100 at least) and even a Max Wedge 286 Head.
Shipping Back East is so expensive that it would not be worth it even if
I gave you them for free except maybe if you needed the Max Wedge for
a project to complete it.
A 72 340 would come with a 1.88 J 915 Head as I recall. I have only seen 587
on 73 up myself. In my testing the 587 is not a significant improvement on Air Flow over the
915.