if you take out the rear bolt on your front bumber bracket. you will now have a open hole in the frame right over k-frame front bolts. oil can them with trans fluid and it will run down to other set. heat one at a time with hand held bottle torch, never impact, ive used my 3/4 inch rachet on over 50 rot boxes ive chopped up, to get the k-frame out never spun an insert yet.