Tactic 1: Rope
Advantages:
-The spit has better climb with wep and the planes weights are similar. In theory this could work.
-Even veteran pilots can get greedy and fall for it from time to time.
Disadvantages:
-The N1k has lots of powerful cannon to lob at you, and the spit cannot take a lot of damage.
Final note, only do this if you have a bit more E than the n1k. He may not be a able to climb all the way up, but he will be able to hang for a while, allowing time to some shots. Also do not rope straight up, turn it into a spiral type rope.
Tactic 2: High speed fight
Advantages:
-Without flaps the turning radius on both planes are very close. Keep the n1k's flaps up and the fight could go either way.
Disadvantages:
-Dont rip the wings off, this is too fast.
Final note, Keep your turns level or slightly up hill. Most pilots will quickly give up alt for speed, if you save some alt, you can always gain speed quickly. You have a better climb let him fight it.
Tactic 3: The fight gets slow
Advantages:
-the spit can easily out accelerate the n1k. You can bug out at any time.
-Again the sustained climb rate will help you, fight up hill.
Disadvantages:
-The n1k can really out turn you here.
-Any crossing (like flat scissor) can end badly quickly.
Final note, You can make you speed back faster than the n1k. Remember this and if the situation get bad, extend and come back after 1.5 k or so. You are not running, but dont fight a losing fight. You need to know when you are losing, if you wait too long, the n1k may reach you with the cannons as you leave.
General:
-I love the rolling scissor. IIRC the spit has a better roll rate and its very friendly near stall. This can work of for the spit pilot in those slow, over the top, rolling scissors fight. You can also try to have a net climb over the rolling scissor fight, this is going to hurt the n1k in the long run.
Keep in mind, these are only my suggestions and every scenario requires different action to win. If I am way off, someone please correct me. I do not fly the spit often, but this is what I would do.