Mopar Viscous fan??

The difference between the thermostatic and non is the non has a fixed amount of slip where the thermostatic the slippage is variable by temp. Neither of them lock up.
I pieced a system together for my car. Purchased a thermostatic clutch at the local parts store for about $40 and picked up a fan from the junkyard for a couple of bucks. If I recall the fan came from an 80's GM, Cutlass I think.

It was a simple bolt on and didn't require any changes to pulleys or brackets.