Converting an L36 to an L67
I am about to aquire a L36 engine from a freind who was going to rebuild it and put it in his SE. He has to move out so he is giving me the engine, I was wondering how difficult it would be convert it into an L67. I know you have to change the heads and a few other things, I want to put a new engine in my SSEi since mine is sitting at 210k. My current engine is in great condition but I want a more powerful engine and I do not want to mod mine to far because of its age.