trimming lower control arm

[NCHammer]

hey, I'm swapping spindles to give a 4" lift, what tools have y'all used to trim the control arm so that the new spindle fits right with turn radius intact? I really don't want to spend a lot on a tool I won't use often, and I already have a dremel but I burned through the heads for "metal cutting" on that. Thanks

 

[franklin2]

$30 too much? https://www.harborfreight.com/7-amp-4-12-in-slide-switch-angle-grinder-64856.html