Got my own answer, C3TE-A rockers are 401-477-534.
Somehow I have on hand a brand new pair, shafts, stands, springs, rockers both sides.

I still dont know if the rocker arms would fit the 406/427 FE, they sure look the same....

I don't have a 534 so otherwise I don't have much use for em.
Nice setup though, factory end stands!