Discuss VesikoDi's answer to: What motor will fit in my 2001 Kia Optima

Hey, here I got something for you:

Engine Assembly 
OEM Genuine Quality

http://www.automotix.net/usedengines/2001-kia-optima-inventory.html

or

http://www.autoguide.net/apf/kia-usedengines/optima-catalog.html

But think also about meeting a professional to take a look and give you even better advise because he can see if there are other specific things about your car and its condition. You can contact any car dealer service like Ford (http://www.ford.dk/), Volkswagen or another one for more detailed information.