Is there any hope...?

I think Ima seeing two different bolt circles on those wheels.

You see those little holes for mounting the center caps? I see two different size holes. The one on the right, has the small holes, which go with the early "bullet"caps and these were found on the sbp's. The one on the left has the bigger holes for the later caps which were found on the bbp's.
Your 74 should be BBP all round, hence the problem. Small bp's cannot be made to fit, on the large hubs of the bbp's. Well, technically I suppose you could "make them fit", but I doubt successfully.
I suggest a remeasure.
I could be wrong,tho,cuz I suppose those bigger holes on the left might actually be bolt-heads.