A51 tech
>>>Isn't there anything they can swipe from the secret alien technology department A51 to get a more viable reusable space craft built?<<<
That's not how it's done! The secret stuff stays secret until there is no other option than it being used publicly for a 'must do' mission.
Secret govt. money develops secret stuff - Public govt. money develops not so secret stuff.
The origin of $1,000 hammer stories is from the early days of spreading the secret costs across the entire expenditure then somebody actually giving a correct raw cost printout to legislators when asked.