Brake proportioning valve urq vs. 4kq?

[John Karasaki <johkar@teleport.com>]

The brake proportioning valve under the master cylinder on a urq looks
exactly the same as the one found in the same spot on a 4kq.  Are they the
same?

I want to replace the part on our urq along with the master cylinder in
prep. for PIR next month.  Someone recommended just taking the valve out,
but I'm not sure.

BTW, I have all the brake parts of a 5ktqw at my disposal.  I'd like to use
as much of that stuff as possible because a new proportioning valve is $75
from Halsey!!

TIA.