True...Armstrong built a few...another one is down in Lancaster, CA @ Ron Hammels (10,000 rpm) shop and if you ever go visit his dyno room look up in the ceiling and you'll see alot of left over carnage from explosions.....I grew up there and we'd visit after school when they would make pulls and we'd all leave the building real quick....Cops were always there from noise complaints..
John Mitchell wanted to make a pull on fuel but Ron said no way as the dyno had a 2500 hp limit......sounds weak, compared to the est 8000 hp NHRA promotes, saying 2500 hp but that is alot of ponies in a confined space......