Gary,
You are right, of course, but I should have explained my observation. My sensor ('86 CUCV) is very different than the one that came on the civvy ('83). My sensor is small and appears to screw directly into the block. The civvy one was huge and required a "mounting plate/adapter. That little valley adds a bit of complexity to the process. complexity = cost in the fabrication world. I think mine would work with just a hole. More on this down the road. I will have them built to normal spec. I will include details as the affair evolves.
Barry, I am glad to hear someone else is coming over to the dark side. If you were going to say you are thinking about going 12 volt too, don't! We may both be burned at the stake, just keep it on the DL.
OD might just start to have a different connotation. I hope this will help you and others. With SEMA next week, I imagine, it will be 1-2 weeks before everything is in order. I will try and keep things updated.
Maybe this thread should have a poll? Something to the effect of the title. That might, perhaps, give me a better idea how many people are interested, without them having to capitulate.... er uhm, write in.