I missed this boat a long time ago.I personally used to make all sorts of looms/harnesses/solder/crimp/pot/mould train others and final test where I used to do work for mi5/bae/mod.If my mate John.B comes along I hope we can get something going.He is a cryogenic project engineer for where I did 13 yrs and my partner engine builder lol.I hated the place I worked but engine/injector/fan and fuel looms would of been a piece of piss at a reasonible cost and made to any spec cough cough.
I can ask but the last time I spoke to him he was quoting some F1 looms.£800 before you start priceing materials lol.I am sure he will be kind to fellow PF members