I'm considering cutting the front off my project car to work on it then re welding in gas along the original weld lines. This might seem insane but I need to do a rust repair at the bottom in gas or tig and it will give me access to straighten some accident damage that I'm struggling to get to if I cut along the original lines it will all be easily accessible to weld horizontally and vertically in gas and planish out the distortion afterwards. I was thinking of cutting with a 1mm hacksaw blade and re welding with no gap gas. I'm trying to go for as close to no filler as possible metal finish hence the extra effort. Taking the nose off would also mean I could wheel or planish hammer out the dents on a machine. Has anyone ever done this?