SW temp sending unit question

I bought a 3 gauge Stewart Warner set with temp, oil pressure, and volts.. My question is on the temp sending unit. I removed the stock temp sending unit and reducer bushing out of the Edelbrock intake. I went to install the SW and the reducer bushing that came with the gauge is too big. If I remove it, the threads on the sending unit is too small for the hole in the intake. I doubt I can tap the hole in the intake because of all the shavings. What can I do? Its like I need the stock reducer tapped larger, but it might be too thin if I can tap the reducer bushing larger. Any advice would be greatly appreciated? I've been racking my brain trying to figure out what to do.

Thanks,

Phil

 

aren't there more reducer/bushings in the box? usually there are 2-3 of them with most gauges. i assume the hole in the edelbrock intake is 1/2" NPT , what size do you need?

 

The reducer bushing that I had the stock temp sending unit in takes a 3/4" socket. I only had the 1 reducer bushing in the box for the SW sending unit. Its like I need that bushing inside diameter larger, but the outside diameter has to be the same size. Do they make a reducer bushing in odd sizes?

 

Time to visit the local hardware store.