I don't know if this would be the right place to post this and might be a dumb question to ask but here goes. This is regarding the engine, what other engines can be transplanted in for more power and uniqueness without a HUGE headache. The reason I ask my bestfriend is selling his 03 cobra engine that he no longer wants. So could this actually be a good engine to put in a navigator?

Or what about that Supercharged lighting motor?

there's an idea, 5.4 v. 4.6?