Heard the bad news today that one of the cylinders has low compression. There is therefor the possibility of a burnt valve or a piston thats bad. I can however get hold of a low mileage Mazda 2 liter 16 valve engine

My question now is, can I fit the Mazda engine into my Kia without any major alterations like mountings, oil pan, and so on?

Thanks for your help.