CH-53K offer from Sikorsky..

via Flight Global.  March 2012.

The US Naval Air Systems Command (NAVAIR) is evaluating a proposal from Sikorsky to build four production-representative CH-53K Super Stallion heavy-lift helicopters, says the US Marine Corps' programme manager.
"We're looking at the proposal now," says Col Robert Pridgen.
NAVAIR received the proposal at the beginning of March, he says. A contract award is expected some time after this has been evaluated, although Pridgen says: "I don't want to nail down a date."
The four pre-production aircraft will be "fleet-representative" and be used for operational evaluations, as well to finish developmental testing.

We still have no word on whether or not NAVAIR has taken Sikorsky up on its offer.