If you are putting the engine as far forward as you can, just remember that you will need as much traction as you can get. So ideally you want the block to be sitting directly between the front wheels if not slightly behind the centre of the front wheels, so it isn't "front heavy".
Just make sure you get every measurement you can before you start, because it would suck to do a whole bunch of fab work and then have the car handle like a tin of dog food.