What about planning on zip tying the a40/a50/t14 connector and adapter to the shroud, with enough wire to relocate the T87 to the firewall?
And I could see the potential for two options: option 1: a box of pins and parts that you have to put together for 'x' price (cheapest) or option 2: An assembled harness for 'y' price (more expensive). Considering what ats is charging, if the assembled kit was $1,000, it would still be a bargain.
We could do it as a "Build It Box" deal where each month you receive a box of parts, along with short instructional video on how to assemble your custom harness?? If you stay on schedule, you can have one built before your dealership receives your T14 backorder... I like it.
It did take me a few hours to pin out that new connector. Hit a couple bugs I wasn't aware of going in. Like fact there is break tab on the latches down in he middle. Pushing the terminal in to where breaks the latch print medium tab using a 20ga wire,, is like working with a limp,, never mind.. I used a pick to snap each one, after I got about 10 pins in..
So my young engineer is printing up few more cavities with varying terminal latch, length and width examples. Then he can sort it. But we don't have a secondary lock, so the latch has to latch.. Besides for that, time eater was installing terminal ends. I found someone with the tooling to machine assemble both ends.. That should knock out 90% of the assembly time. Just need to know how long to make each wire, cause he does like 1000 at a time. Like a minute..
As to your Zip-Tye option, I'm thinking there might be some involved either way..
