Swapping in a big block

I am installing a 383 / 4 speed with a Dana in my 68 barracuda coupe and aside from all the parts that have been mentioned here you can go with 2" TTI headers. They fit in with the slightest amount of adustment but you will have to lose the power steering. If it is a Drag car you are only going straight anyway! I am using the Shumacher mounts because I have them and installing frame connectors and SS springs etc. If you make close to 650 HP you should have no problems hitting the 10's. There should be no reason for a bottle. May I suggest that you run alcohol instead of gas. It will keep your car running cool and make a little more power.