Hy AdamK1500, I believe your original front wheel cylinders are no longer available, I believe the original part number was United 19944. Years ago this same subject came up, I did some research and found wheel cylinders Raybestos p/ns WC19090 and WC19091, these wheel cylinders are the same in all respects except the angle at which the brake hose enters the wheel cylinder. The original wheel cylinder had the hoses go straight into the center of the wheel cylinder, the replacements have the hose come in at an angle. The other person I made this suggestion to purchased the replacement wheel cylinder and installed them with no real issues. RockAuto has Raybestos p/ns WC19090 and WC19091 for $17.94 each, hope that helps.
I ending up running across a set that I think may work on oldchevytrucks.com. I emailed them to verify because the description isn't great and there is no picture.
unfortunately they are 45 a piece, so i may go with the raybestos cylinders regardless. thanks for the part numbers!
I had thought about sleeving the existing cylinders but i thought cost would be an issue. For the right price that would be an option as well.