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 ?

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Cheap, Fast, Reliable... you can only pick two