Need 1/8" Pipe thread temp sender compatible with stock gauge

[chuckmc8]

2003 5.3
1971 Blazer

Autometer 2277 adapter-goes into head on pass side and has 1/8" thread port for sender----1/8" NPT Female to M12x1.5 Male
http://www.autometer.com/cat_accesso...il.aspx?vid=61

What I am looking for is a 1/8" sender that will screw into the adapter and be accurate for the stock Blazer gauge. The Autometer site sez

"If using with a Short Sweep Electric Temperature gauge, sender #2259 is also required."
http://www.autometer.com/cat_accesso...il.aspx?vid=33

Will this sender correctly operate the factory gauge? If not, Autometer sells others or another 1/8" sender might work. Anyone know?

I am not looking for other alternatives such as drilling and tapping the head- I only want to now about a sender--Thanks!