250 water pump pulley

[gtbrain]

I am in the process of adding power steering to my 66 c10 with a 250 six.
I found some brackets through this site (thanks wancosc356) that I have been able to fabricate to work with my ps pump and mounting the alternator.

My question is, does anyone know where/who I can get a 2 groove water pump pulley from that would fit my app? I have checked the normal vendors with no luck so far. The old single groove pulley is roughly 7 inches with a depth of 2.75 inches. The ones I have run across are too deep to match up with my pump.

thanks.