35ft Lightning Weight Distrubution ?'s
 

Hope this is in the correct place.

Our 35ft. Lightning came with twin 454's. I had them freshened up last year however, I am thinking really hard on swapping them out for twin 408 Stroker LSX Engines and sticking with Fuel Injection. My question is this. Is there a specific weight that needs to be in the rear of the boat for proper balance of the boat to perform properly?

The LS Engines are considerably lighter so I want to make sure the boat will still have proper balance before I pull the trigger on this.
Thanks,

Chris