I agree with you Inners where the shell and tags have provenance together, such as the signs pointing to this one. But it will affect the value all the same.

On the extreme side (and I imagine why some take the view of changed chassis no longer interested) earlier this year there was a HJ Sandman on ebay (with a HHS Certificate used in the advertisement to confirm authenticity!!) with a WB chassis. It think it was factory 253 4 speed, now 308 auto, but the worst part was body shell was also all WB. So what was original to the Sandman??--3 tags.