In early 1966, a Request for Proposals was sent out by the University looking for industrial partners interested in building the design. Seventeen responses were received in July, seven responded, and of these three were selected. Several of the responses, including Control Data, attempted to interest them in a vector processor design instead, but as these were already being designed the team was not interested in building another. In August 1966, eight-month contracts were offered to RCA, Burroughs and Univac to bid on the construction of the machine.