Forgive me for all of the questions. I have tried Google and searching although the questions seem not be quite what I want.

I am debating whether my car is running a thermostat at the moment. Whilst my heater is warm the temp gauge is quite over the place! The fans however do cut in and cool the car down in addition to it gradually getting warmer in traffic as opposed to straight away. My setup at the moment is an Airtec radiator with a Bailey swirl port and Stainless header tank.

What thermostat do you chaps recommend for a ZVH? Is my only choice an 88 degree item? (I am not going to lie, that seems to look a little hot for my liking!).