Steve,
My engine is mounted a few inches forward of usual and I don't think it makes any noticeable difference.
The car handles quite well and any extra weight over the front wheels is negligible. Also the foot boxes can be made a little wider with plenty of leg room.

Cheers,
Bryan
__________________
COB-66 Young at heart old fart.
Don't drive faster than your guardian angel can fly.
If it doesn't matter what gear your in you have enough torque.
VK3KDN