I need to replace the drives side rear Frame Rail and torque box on my 69 mustang. Can anyone give me any pointers/ advice / tips or just walk me through the process.
You should have a mig welder and the skill to use it. I think your talking about the front unibody rail and front torque box. I would pull the motor to get the wieght off the car and to get at the rail, write down any measurements you can and take some pics as well as some good drawings as these will come in handy.