How do you find the bold pattern of a 1954 chev 3/4 ton with 16 in wheels?

I have a 1954 3/4 on factory flatbed with a 4 speed with granny low. Cab needs some body work. It's just a shell. no glass. motor, trans and rear are all there and working. Recently overhauled and all new brakes. It is all original. It has the gauges and I bought a Painless Wire harness for it Got good gas tank behind seat. No original seat. I got 2 black leather power seats that will work well. First time doing something like this. I think I took on too much with this project.