Hey all,

You can put big stall converters in the btr boxes.
If anyone can remember the street machine mag with the purple xy that has the 1996 ef xr8 engine and box in it.

He has a 3500rpm stall converter in it!

He is running aftermarket ecu! Maybe thats the secret.

If you go much higher than a 2 grand stally you'll run into problems with the box goig into limp mode.