I do beleive that the kit is 100% drop in bolt on. I dont thiny any welding is required, althought it might deem necessary in some places.I love it...that is beutiful man. How hard is it to do this project? I've calculated the cost of all the parts to be between like 9-12K or thereabouts. Is welding at all required to do this install? If it is not then I could do this and save a ton on labor.