I'll get you photos of my Prem. All that stuff is totally original so it'll give you some reference. The hardest bits to find are the HQ/J vacuum operated heater switch and a HJ air cleaner. You can get a HX/Z vacuum switch new from Rares but plumbing is a bit different, but since you've got an aftermarket valley and blue Quaddy that shouldn't bother you that much. Now this stuff is almost 40 years old it is all getting to be a pain to find. If you come to Newcastle at some stage, between my shed and Oz's yard most of the bits should be around. Have you got a factory air inner guard, harness and all the fiddly bits?