You can put on 132" big bore kit from S&S. That should break crush drives, tear up the trans, and rip the teeth off the belt.

Check it out at...
www.sscycle.com/Product/X-Wedge-Series/Enginec49/


'50 Indian mc. '50 Harley. '53 MG TD. '29 Model A Ford Roadster Pickup.
Oh 2003 Gold Wing.