Accurate temperature sensor

[MrDee]

I'm looking for a source for an accurate temperature sensor for my 69 GTX 440. Needs to be 80 to 100 ohms cold, 20ish ohms at operating temp. I bought one at Napa thinking it would perfect, but it's 500 ohms cold and 150 ohms at 180, it won't even make my gauge move.

 

[69L48Z27]

I’ve purchased ones off Rock Auto. Don’t recall what brand but they all worked as they should have. Probably Standard brand.