someone please let me know the best way to replace front left framerail & torque box on 70 fastback. have everything i need to start, but dont want to weld on wrong way or for car to twist or flex. old parts are still on car. thanks everyone.  

before you start remove the intirior and carpet. raise the car up so that you can work both inside and benieth the car without moving the car. brace the car frim eight places so that the car wont twist when you remove the old parts. Use a spot weld romoveer tool to drill the spot welds. On my 69 i did full floor pans, floor pan extentions and tork boxes at the same time. so i removed all the old metal on the left side first. then started by installing the tork box then floor pan extention, floor pan, reinstall seat pan  I hope this helps