Rebuilt by turbo action to stock spects as it was new?
As in can the 9" be used as duel purpose street / strip

The specs for the original B&M O69J probally varied depending on which motor is was built for,Hemi,Wedge, SB, if it was a custom built converter I have driven them on the street I have a SS T/A 8 inch race Hemi converter in my Duster now and it drives fine on ths street and works a lot better at the track than my custom built 10 inch street and strip converter did

I thought I read somewhere they were arounf 3800 stahl, but we all know it depends on the motor. I could be wrong though, getting close to the end of the year and about due for one mistake.