New Formula One team owner Gene Haas has given up on the idea of using a Dallara chassis for his 2016 race car and wants to enter into a technical partnership with a current F1 manufacturer.
Regulations with regards to selling parts to other teams will be relaxed prior to the start of the 2015 season and Haas hopes to purchase power units and various other parts from another F1 outfit.
"We are trying to nail down a technology partner," Haas told Autosport when asked about his plans for the team.
"We've spent a lot of time with Ferrari, and talked a little bit with Mercedes. Engine supplier is only half the equation here, and we're still working on that.
"Until we have a signed contract, it's open.
"I would hope we could do that in the next few weeks.
"Even though we are not racing until 2016, a year is going to go by pretty quick. So it's important to have a relationship with somebody we can get started with."
Haas confirmed that his initial plan of using Dallara was linked to a 2015 entry into the sport, but after deciding to join the grid the following year only, he was free to investigate other options.
"If we were going to race in 2015 we would have had to have done that [Dallara] package," Haas said.
"We have 50 per cent of what we need to start building our own cars, and the ultimate goal is to do that, and that's the way we are going to go.
"But that list of parts we can buy, as it increases, we want to be the team that takes advantage of that rule and try to buy as much as we can. It just costs too much to make all these intricate little detailed parts."
Team Principal Gunther Steiner added: "We will pick up from our technical partner the suspension and all those parts because appendix 6 is changing next year.
"We will take on making the remaining stuff ourselves, like the chassis.
"If it had been 2015 then we wouldn't have had the time to do it, so now with a little more time we can do that ourselves without going to an outside supplier.
"With the list expanding, that is how we want to act, so therefore the negotiations are a little longer with technical partners because nobody has done that yet."