Hello I have a 1978 GT I am restoring, im wondering how far from the back of the heads to the front of the pump the engine needs to be for optimal performance. Also do I need to do any bottom work to this? It has 4 strakes on the bottom of the boat that do not go all the way to the back of the boat and I'm not sure if I need to extend them. It will have a 600 horse BBC 468 naturally aspirated. Thanks!