A few tips gleaned from my '64DogD100:
1. Brake master cylinder and clutch master cylinder are the same part except there may be a residual pressure valve in the brake MC.
2. My clutch hardline cracked right at the start of the flare on the slave cylinder.
3. Depending on when it was built, you may only need one brake front wheel cylinder kit to do both sides. My truck has single piston wheel cylinders.
4. The plate on the drivers door jamb tells you gear ratio. If it has Sure Grip there is an extra smaller plate next to it.
5. The Truck and Van Moparts board is full of guys who would like to help.
6. If it is a Poly 318, PM me for some tips on that.

R.