welding question for spring relocation kit

the inside of the door should have a chart showing you the recoomended wire size, temp setting, speed, dist , and so on for what you want to weld. the small .023 wire will require gas, and that is what I use for sheetmetal patches, the slightly heavier stuff like frame rails, frame connectors, I use .030 in a flux mainly due, to having wind to contend with. the frame relocation stuff might be think enough to consider .035??? look at the chart, it will give all info.