Is it worth it to upgrade my ignition system?

So I'm wanting some more power out of my 99 ford ranger. I know that one can get a better coil pack and hotter spark plugs to increase performance. But there are also a lot of other details that need to be considered. Like how hot my spark needs to be can be determined by the fuel mixture and how fast it is exhausted and all that. Then the possibility of it not being good on the engine to have that extra energy delivered to it. I was wanting to find a coil pack that had a high output along with maybe some e3 spark plugs to obtain more power/energy/performance than what my stock set up can do. But I didn't want to get one that wouldn't really do anything because I know that my truck has what it needs to run well, bc it needs a certain voltage/power deliverance and it is most likely getting that. I just didn't know if it could work with more. I also didn't want to do any damage with an upgrade. Please share your knowledge and advice with me. And can you recommend any products/setups/upgrades that will be good.

Buy a Nissan

Nope

You will get zero real-world performance.

More spark isn't going to give you more power!
Put cams and a cat back exhaust on it if that's what you want.Don't use different brands of spark plugs. Motorcraft came from the factory!

The cost effectiveness of an ignition up-grades for engines that are turning less then ten grand rpm wise just isn't there.
Check forums at Grassroots Motor Sports. Different spark plugs can make about the same difference. Check the dyno tunes and see what they report.

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