I reshelled a 2.8 capri years ago,the dvla didnt know which plates i should use i.e the doner car or my own plates,i phoned dvla they were as much use as a one legged man in a butt kicking contest and said if i didnt sort it they would Q plate it so i kept the doner car plates,after a while i sold the car,sinse then i have learnt that i should have kept my plates as i used all of the running gear,interior and everything else,but that was years ago!!!!!!!!!!!!.