need yalls opinions

I have a 1979 rx7 and just got done putting in a new mechanical water temp. i could not find a place i wanted to put it so i made a manifold out of aluminum for it to screw into where water could pass by the sender and get a continuius accurate readings. i was not sure if a product was already designed for this application if so i could not find one, am i right about that. well i was mainly wondering if any one would b interested in a easy to install accurate water temperature sender manifold, there are two types and each has a specific place to be mounted. i dont want to say a hole lot right now about it, im working with a guy and figuring out if we could sell theses parts or not. i just want to see what you all think, would a product like this sell and if so how much would you give for a easy to install unit. it only takes a matter of 5 minutes to put in and you dont have to drill any holes or re tap an exsisting hole, so there is not worries about damaging what is already there. just give me yalls opinoins and dont hold anything back i need some feed back good or bad thanks robert robs_seven@yahoo.com