In case you havent noticed, on e-bay a guy has listed 4 sets of Y pushrods, 4130 stock with heat treated ends. Length 8.30. Diameter 3/8 inch. Price, buy it now at 28.95!
I've received mine, and they are brand new in the Erson box, with sealed plastic wrap. Took one out and it is the same length as a '64 rod I have on hand. Comparison prices: Schumanns $100, Mummerts $130.

 

That's a good source. I'm not certain whether they are part of Erson or just buying excess inventory...but I ordered some pieces from them & got them promptly. One retainer kit was wrong (off by one part # digit, easy mistake); they sent me the correct ones & tossed in a free set of locks. All brand new, in the box. They are located in the same city as Erson & Mallory.

 

Ya twisted my arm, I bought a set of the pushrods.
Thanx for the tip