B-2's and F-117's use non-augmented versions/deriatives of the F-404 and as far as the F414 goes, GE
has already done the research and has already to go pending funding to offer an increased thrust version of the F414 for the Super Hornets. From what I have read on the program, the maintenance savings alone would pay for the upgrades over the service life of the engines.
After the USN
royally f#cked the F-14 program you would think that the USN
would have learned the lessons of history. From it's inception the F-14 due to budget cuts and program delays forced the SECNAV to cancel the USN
involvement into the P&W F401 engines that it had been in with the USAF
for the F-15, forcing the entire production run of F-14A's to have to live with the TF-30s which were only meant as an interim solution. I would like to think that USN
will remember that ill-fated decision as one of the worst bean-counting decisions ever. More F-14 crew lost their lives due to the TF30 than in all the US fighter combat losses since the Vietnam War.