the holes drilled for easy outing turned out to be just off-center enough so they didn't want to turn, so i stopped, afraid of snapping it.
that probably would have been the time to use some heat, but i was alone in the metal fab shop & i didn't want to mess with their torch set-up
the dremeling was less tedious than i expected. the shop was air conditioned when it was hot a balls outside, so that was nice. i used grinding bits intended for chainsaw sharpening, it went fairly quick.
on monday i will take the carnage to one of the old-timers to see what can be done
i agree that starting over w/another housing might be best, but at the moment there is no car parts budget untill a new build comes through. will put out feelers in parts wanted
much thanks for the helpfull advice