I have 2 rocker shafts, they are 406/427 style but have 5 stands [with 1 at each end] and from first-to-last rocker is over 1" longer than the FE setup

The rockers LOOK identical to the FE adjustable and say C3TE-6564-A

Are the FE and 534 rocker arms interchangeable?

It's either a 534 or MEL 430 setup, can you tell me which??

 

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!