Get the relevant docu from GitHub
Get a PCB from OSHpark
Most items are commonly available, with the possible exceptions being the 63C09EP (be sure to get an 'E' type with external clock) and the Z8536 CIO. I obtained the CPU via eBay. The CIO might be a bit harder to find. It's not critical, and can be omitted if desired. Be careful with the EPM7128S CPLD, also - some surplus chips e.g. eBay are pre-programmed with the JTAG pins assigned to I/O - these cannot be re-flashed using JTAG! Ask me how I know this...