:yes:
Its highly unlikely you'll make the deadline anyway. If the conversion was half done and it was a few things here and there that needed tidying up then maybe, but it hasn't even started yet. You'd need to find a workshop that knows the conversion (highly unlikely), has a week or so free (unlikely) and is prepared to work to a deadline.
Concentrate on the exams and then work on the car in your own time after. It will be finished when its finished, throw deadlines out the door.