Hi all.
Can those in the know please share their experiences with swapping out any combination of the 3K, 4K and 5K engines? How noticeable was the upgrade or downgrade? If I hypothetically took out a 3K engine and replaced it with a 5K engine, how much of an upgrade in performance would I get (not looking for horsepower numbers, just noticeable honest feedback). How impressed/disappointed were you with the upgrade/downgrade?
Thanks heaps,
Paul.