Wow. This is certainly coming along nicely. What size cable have you selected for battery cable?
My suggestion if you haven't bought any yet is 50mm2 welding cable (the proper multicore flex stuff). Will cost a fair bit, but it will be worth it. Volt drop not only kills off start cranking, but it will also hurt your spark plug voltages and also to a certain degree sensor readings to the ECU.
Looking shithot though dude.
Thanks man, i bought proper battery cable 52mm i think its like rated to 400amp or something, so hopefully wont have any issues there, its all running and frying tires now, just need to sort out the brakes will upload a video soon