I have found this used parts at ebay, mostly used Parts.
Work this List togehter with Mojave?
I7 7700
AsRock H270M-ITX/AC
Crucial DDR4, 2400MT/s, PC4-19200, DR x8, DIMM, 288Pin
Samsung 970 EVO 500GB NVMe M.2
Gigabyte GeForce GTX 1060 IXOC 6GB
Corsair CX 650M
Cooler Master MasterLiquid Lite 120...