Great stuff Gary, thanks!
Jan, do the instructions say which bay doors are for which period? If not, you should be able to work it out from the diagrams and drawings in the link I sent you. AFAIK, the bay doors were interchangeable depending on the package - and the linescan, and ultimately digital PR/surveillance/survey kit would be from the late 60's, the 70's and the latest deployments, up to 2006 (I think that was the last, anyway.) I'd need to see the instruction sheet and the diagrams of the 'wet' fit to advise further though. The overall equipment fit, specific to task, would determine which packs were fitted, and therefore which bay doors were used, if this makes sense!!??