F-106

this article is about what some wanted to do with moth-balled Sixes ten years ago.

If you read the entire article, it says what altitudes and speeds were actually attained by standard Sixes when in service, plus it tells how good the airframe was.

http://www.f-106deltadart.com/rascal_project.htm

The site has a tendency to go straight to the article but if you kill the paper page it will go to the site and interesting pictures.