I've got an 1968 Escort which was originally a 1100cc, but now it's running a 1760cc. The log book hadn't been updated when I bought the car, so should I admit the swap to the DVLA? I know it shouldn't affect the tax which is zero, but are there any other reasons that might have stopped the owner who did the engine swap from updating the engine size and number on the log book?
Thanks,
Ben.