Thanks to the retro bike archives, i was able to use this scan (see below), for the base"s of the build spec.
Both bike companies offered infinite build possibilites, and options, depending on the size of the customers wallet.
Even with Orange being made in the far east, they would build the spec of choice from the options list, if it wasnt on the list, the spec could still be altered to whatever suited the customer, providing the uplift charge was covered...Nothing new i know, but this piece of info from the archive i have found very valuable and a good base to start.