AL WTB: 60-62 Hydrovac Power Brakes

[GMCNUT]

I have just bought a cool old 3/4 ton 61 Apache and I want to add factory power brakes to it so I can feel good about pulling my 18 foot dovetail trailer to car shows and swap meets with it - attached is a photo I borrowed from another members post to show what a Hydrovac unit looks like - this unit would be the same most of the time on any 1/2 ton thru 1 ton and is a dealer installed option for light duty trucks. Note the narrow vacuum canister width - about as wide as your hand - wider ones are used on 2 1/2 ton trucks and they mounted to the frame. This one I need either secures using 3 "L" brackets to the firewall as seen in my example picture, or it will be fastened to the inner fender.

These are most often found on 3/4 ton trucks, and on suburbans and panel trucks but I am interested and will pay a decent price if any one can turn me onto one - I actually have 3 Apaches and could use more than one....please let me know what you can find - will trade 60-66 truck parts for one too!

Thanks! Steve