Why is that? Is there a problem with the ZZP or Dynotech input shafts? Or something you don't like about them?
Zoom was so confident in his shaft that he offered to give JonBob's Whippled car a free 300m shaft if he managed to break the 4340 shaft.
While we are talking about upgrades to a basic build, I was curious what you would say about Torque Converters, Any brand you recommend ?