Honestly I think it was kind of cheesy, it was just a bubble flared chunk of steel tubing pressed in the hole. If I remember right it was only sold with the crate motor.

You're probably better off creating something different/better.

If I can scrounge up any more instructions that refer to this, I will look for the sensor and let ya know. I remember absolutely nothing about that from my 8+ run working there, but unfortunately never worked hands on with this intake during that time period.

I agree the price is crazy, always has been, the fellow managing the program was somewhat rushed and the casting/machining work ended up going to high dollar prototype shops instead of mp's normal intake foundry out in CA, the one with the "BB" casting mark (buddy bar). He brought the product to market quickly that way, but after he left mp seemed to be no marketing interest in resourcing/managing it. So there it sits, kind of stuck.