is my crank effed.

the nut was so badly stripped it had to be ground off with a dremmel. looks like it went in a little to far. do you think i can still thread a nut on there or am i screwed. i don’t want to pay a shop money to fix it as it would probably cost the same as a hot rod stroker crank. should i just say screw it and put a +4 crank in it. i all ready have a 734 jug on the way.