Ok its been a while but I have been hangin out mostly over on the 6066 GMC Guy Forum & Facebook.

I'm rebuilding the braking system on my Rescue Squad, I have done the rear wheel cylinders & Master Cylinder, the brake booster is out for rebuild. I need to know if any one has numbers for the front Wheel Cylinder & a rebuild kit fo rthe Booster. The large rubber diafram in it it ripped and I got fluid on the vacunm side.

Here is what i can help with, I have the following numkber for the 50-60 Chevy truck & 3500-4000 GMCs.

I got these from NAPA but once I had the numders I could find them on O'Reilly site too.

the rea brake system on my truck has 2 wheel cylinders on each side, a forward one and rear,

Raybestos, forward cylinder - WC-18196 $37
Raybestos, rear cylinder - WC-37042 $ 44

The master cylinder I found the following;

Dorman M87167
Fenco {Autozone} NM34404

I hope this helps some of you out, and I hope some of you can help me out.

Thanks.