If a body swap is done legitimately for restoration purposes then the owner should have nothing to hide if and when they decide to sell and full disclosure to any potential purchasers would be given.

if I get around to restoring my HX I will do it legally..... I will use the good cowl section off my old body (with plates attached) to restore the new body I'll be putting on the chassis. Hopefully I can get a Adelaide built HX shell the same as original..... If I ever decide to sell I will disclose all and give the new owner a record of the resto.

personally, even if I decided to sell the HJ I would never advertise it as a "genuine original Sandman" as it isn't. Restored HJ Sandman should cover it and avoid potential legal action.