This thread reminds me of those Model "T" guys at the car shows.......The always looked down on the hot rod guys for modifying their cars.
Its up to you....If you feel the car should be left stock, do that. It can only be stock once. ....If restored to original condition, it is still modified from original, paint body etc.....so its still not really all original
BTW...Those bumpers dont look stock to me....could be wrong