Anyone know of a source to find a "hardened" woodruff key for the crank on a 5.4. I'm not sure if the stock key is hardened or not so I'd like to find someone that offers one so I can be sure it is hardened. Using the 2 piece trick flow crank gears and the larger crank pulley I want to make sure it's a hardened key to support the stress.

 

get the JLP double key kit

 

Thought about that but hate to do that. May just weld the TF gears together and hope it holds. I'm using a larger crank pulley so there should be a little less torque on it than if it was a small pulley.