So I am the owner of a 2011 Optima with the 2.4L. Sadly it’s an automatic and I plan to change that. Not myself but through a shop or a dealership. I understand it’d make more sense to buy a manual optima however I recently had a new engine installed with a lifetime warranty because of the whole crank bearing issue with the 2.4. The transmission will not void my warranty and it makes no sense to get a different car as mine only has around 3k on the engine now. Just wondering if anyone out there has any idea how much it’d cost and if i should go through the dealer with OEM parts or a shop. I will try to get a quote soon from a local shop and if it’s anything under 3 grand it’s happening.