can any one shed some light on my issue,have just tried to phone dvla but there closed, i wanted to fit some side windows to my defender 90 1992 but was told by a friend if your log book said light goods(which it bloody does)that i couldn't do it unless i payed tax dont no what to do now,want to just fit them and blag it if i come to sell it in the future but then he also said my insurence may be effected? any one else having these issues and what you done? paul