I need a coolant sensor adaptor that screws into the passenger side head ( near the firewall). The size is a 12mm x 3/8" pipe, but needs to be a shorty fitting. Been through Street & Performance, and they sent me theirs, but its too long. I can't screw in my coolant sensor into it. They have sent me 2 of their long adaptors, and 1 short one. The short one would have worked, but couldn't screw my sensor into it. I can use the long adaptor but I would have to buy an 3/8" pipe x 3/8" pipe brass elbow, for it to work. Is there anywhere else I can buy this adaptor or am I stuck with the long one and elbow?