Is the thermostat easy to change on a 1995 Acura Legend?

Yes. It's located on the front righthand side of the engine. Follow the radiator hose up to it. You can't really see it standing in front of the car, have to kinda feel for it. You'll need a rachet with an extension to get to it. I believe the socket you'll need is 3/8'', the classic Honda bolt size.

The gasket must be on both sides of the flange of thermostat before installing.