Alright I was right hahaha, it just confused me because the replacement parts I picked up are so different.
These were the 2 coolant temperature sensors available... LEFT: V8 RIGHT: V6
Connections. LEFT: V8 RIGHT: V6
What I pulled out of the truck. RIGHT
I decided to buy the V8 one thinking Canadian Tire's system was wrong since it seemed like the right size. The connection was the right size and the overall length was the same, but the thread was too big. They both use a 3/4 wrench.
Could I have just been unlucky and shouldn't have gone with Canadian Tire?
I'm going to return the V8 Sensor tomorrow, I think the V6 one looks too small.