I am trying to build a low buck gasser style '60 Falcon. It still has the stock 4 lug rear end in it now. What are my choices for a replacement rear end? I have the resources to redrill the stocker to a 5 lug but is it strong enough? I thought maybe a S-10 rear or a newer 5 lug Mustang. Any others? I only plan on using about 400 horse small block. Any suggestions would be appreciated.