Thanks everyone, I know all about measuring, When I raced door cars, I built all my chassis, that lead to building others for friends. When you can't afford it you learn how to do it. This will be my 1st straight axle though. I don't want the real high stance in the front. Also, I'll run a 4 bar set up, coil overs, and panhard bar in the rear. 8.8 explorer rear end narrowed to 56 1/2, disc all around. Anyone know what axle and springs I should look for? Also on engine placement, I have the BBC, dummie motor set up with the #1 plug even with the spindle center line. I have about a inch to go back more without reworking the firewall. Since I have to redo everything thought I would ask. I forgot what my crank centerline to floor was. On headers I would like to run fenderwell headers, 2in tubes, 3 1/2 collectors.