should I replace my when I do my timing chain?

Hello I have a Prius 2012 with 205,000 miles on it. I'm planning to do a timing chain repair, this is a problem I caused and plan to fix however I know these cars have a head gasket issue at higher mileages and I was wondering if it was worthwhile for me to just change the original gasket now since I'm pulling the timing cover off anyway. I do plan to keep the car. I haven't lost any coolant at this point and have had no issues as far as I know with it but I have had the car overheat one time because I forgot to plug the water pump back in it was very brief but it did still overheat.

 

Yeah in hindsight I definitely should have gone with the replacement motor. Learned a lot about engines though. Ended up needing to be the head gasket anyway because I dropped a valve into a cylinder after I decided to do the valve stem seals. Next time though, definitely just swapping. I got intimidated by the idea of an engine hoist and the fear of breaking my windshield but it was not worth the hassle lol