We got our converter second hand with the motor & I'm trying to find some info on it. I don't know the manufacturer but it has this stamped on it:
829 B14XLS +1/4 A1014135. It's about 10.5" diameter. Obviously the +1/4 is the extra lug thickness for the motor plate but that's all I can say.
When the car launches, rpm goes to about 5k immediately. I've searched mainly with the B14XLS part but drawn a blank. Any idea on the manufacturer to start with?