My solution was: a lot of heat Used my propane torch and to protect brake lines, I covered them with my welders gloves, because I couldn’t find any plumbers mats. Each bolt took around 5-10 minutes of constant heating and then serious impact gun action, but I got there :)
Been there, done that. Swapped my motor out on my Mazda6 and the A/C compressor was WELDED on to the old engine block from rust. Sucker added at least four hours to the swap. Getting it out was liberating