A thousand more jobs could be created at Longbridge if a revised and enlarged offer by Project Kimber is accepted by the administrators.
A second strand to the consortium's attempts to revive production at MG Rover emerged yesterday, with the team also tabling a bid for the Powertrain engine making division.
Kimber had already lodged a £20 million offer to buy the MG brand and tooling, but said yesterday that it also wanted to buy the engine making division as well.
Under its plans, which have been submitted to PricewaterhouseCoopers, it could either buy MG on its own, or together with Powertrain.
Barrie Wills, spokesman for the bid, said it could lead to more jobs.
He said: "We have been shopping around all over the world to see where else we can sell the parts of the business we didn't want.
"Then we found an interesting opportunity. There is scope to be a major supplier of engines for a car manufacturer in an emergent country. One company has a requirment for around 200,000 engines a year, so we thought let's go for Powertrain as well."
The capacity of Powertrain is about 250,000 engines a year, which could be increased to 500,000, Mr Wills said.
He said: "Powertrain did employ 1,300 people, but if we doubled production that could add another 1,000 employees."
Mr Wills would not be drawn on the price his consortium was prepared to pay for Powertrain, but said that together with its £20 million offer for MG and its help selling the remaining Rover assets could raise between £70 million and £80 million.
Mr Wills added that the revised and enlarged plan had the full support of the bid's backer Robert Tchenguiz.
Administrators yesterday were continuing to mull over the offers from the three rival consortiums.
Meanwhile it emerged yesterday that Rover's former partner Honda has reposessed equipment and blueprints vital to making the Rover 45.
Over the past month staff from Honda's Swindon factory have travelled to Longbridge to remove machinery and designs for the car, which is derived from the Honda Civic.
A spokesman for Honda said: "The Rover 45 was made by Rover but under licence from Honda. We have equipment and designs at Longbridge which we have now recovered."
But claims that the wage replacement fund was about to be axed were rejected last night.
So far 2,977 jobs have been safegaurded by the scheme which has handed out £3.8 million to 163 companies.
A spokesman for Advantage West Midlands, which is administering the fund, said: "The employees package of support is in place for six months, and has only been going for three months."