Marussia chief executive Andy Webb has confirmed the team will use either Ferrari or Mercedes engines in F1 2014, with a decision hopefully being made by the end of April.

The Banbury-based outfit currently enjoys a relationship with Cosworth, although the firm is not expected to continue next season when the new V6 engine regulations come into place.

Indeed back in February, Marussia sporting director Graeme Lowdon revealed the team is looking for a new engine supplier after revealing that Cosworth will leave the sport after 2013 [see separate story].

Now Webb has provided further details and with Renault in discussions with Toro Rosso - and not keen to supply anyone else - there is only two other options.

"It's obvious that with the departure of Cosworth then we can choose between Ferrari and Mercedes. We'll talk with both," Webb told Russia's Championat. "It is clear that the price will be an important factor, because the cost will be significantly higher than the current engines.

"And we need to make sure we choose the right partner. I hope to be able to announce our decision in the next four weeks."

"The 2014 car is already in the wind tunnel," he added.

"We have already seen a lot of data on the requirements for the engines in 2014. We have not chosen a [engine] partner yet, but we have a lot of information. Of course, a quick decision on the engine would help - preferably by the end of April."