I need gerber files in 274 X format for a PCI-E x16 3.0 to Thunderbolt 2.0 board. The board will have 4 fan connector, a PCI-E x16 3.0 slot for a GPU. The board would get power with a 1 x 24 / 20-Pin motherboard connector. There would be a single Thunderbolt 2.0 outlet from the board, to connect with a laptop and run the GPU. I would like the board small as possible, with preferably the shape of a thin rectangle.