Here's a model I started 2 or 3 years ago, but didn't get very far. It's 1/72 Anagrand Resin XB-51. Not a very good kit as lots of parts were warped and misshaped. It was expensive, too. This was really my first attempt at a natural metal finish and I can say that I have improved since I painted this one. I'll probably strip it and start all over. It's an interesting subject, though.

2 attached images. Click to enlarge.

Bernard, you're right, there were so many interesting ideas and prototypes in the '50s. I love both the U.S. and Soviet designs of that era.

I wouldn't strip the finish off...it has "character" just the way it is IMO. Kinda puts me in mind of the B-45 Tornado sorta.