after i was shown where the main bolts were to remove rear bumper i then started to remove the said bumper out of 8 bolts 6 sheared of which created quiet a bit of un wise french so removed the steel reinforcer then looked, thought what next 3 of these bolts had sheared so i filed them flat drilled them out run a tap through them all way through with a longer bolt screwed the bolt in put a nut on the end drilled a small hole through the nut and bolt for added security and added a split pin did to the others and put it back together job finished thanks for all your assistance cheer .