I have a set marked "ETA" that are definitely '70's stuff and have been thinking about trying them. They are the same as Georde shows in his pic. However......the quality control back in the day seriously sucked and one set of holes is off-centre
in the part that fits in the stock mount brackets. They will take some reworking before they get put on....if i ever decide to use them. I'm seriously considering getting a buddy of mine to do an AutoCad drawing and then taking that on a disk to a machine shop and having them make me a set on their milling machine. I can do all the fancy radiusing by hand with a file to give them that "factory" look. Or maybe I'll just buy a set from
GenMar as suggested by Red01.
We'll see....