MSD 6A Box.

[Ridgerunner]

Is it worth it, adding it to a stock 300 I6 EFI engine ?

 

[Dirky]

Is there a concern that you are not getting enough spark?

Your money could be better spent elsewhere. Not necessary for your application, IMO.

 

[rjphillips]

Only if you have other work done to the motor and you need more go. Otherwise save it for something else to add go fast.