I was looking to upgrade my wires, plugs, cap and rotors. But for some reason when it comes to exact fitment, why do these fit pretty much all other 5.2's but not the '95 Dodge B2500 5.2

Why do these wires fit the 5.9 but not the 5.2 according to summit and amazon. But all other wires fit both in most applications.
https://www.summitracing.com/parts/tay-74676/overview/year/1995/make/dodge/model/b2500

Same for this, Cap, fits 5.9 and 5.2 on most dodges but not the 5.2 on my van?
https://www.amazon.com/gp/product/B000BWDWES/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

And this Rotor, is the same.
https://www.amazon.com/gp/product/B000BW8NLA/ref=ox_sc_act_title_2?smid=AVM1Z79WGIB6T&psc=1


Has anyone upgraded to Iridium Plugs?


I was thinking about getting these. I know they fit, lol
https://www.amazon.com/dp/B00515NJTI/_encoding=UTF8?coliid=IJB9KLPP58JYX&colid=1ZQC9L5ILWN7A

I'm surprised no one jumped in on this. I was just getting ready to ask about aftermarket plugs & wire set myself.

I have bought a lot of parts for my Van which Amazon specifically said did not fit my Van. Rockauto said they would, adn rockauto was right.


Iridium plugs are great for when changing the plugs is a nightmare, but will offer no performance benefits.

I used NGK G power plugs and Taylor 35$ 8mm wires recently. My previous wires were the same brand and model and they were the only ones to last 10 years, but the longest wire to cylinder#2 was compromised when tested.

Some of the years located the coil elsewhere requiring a longer wire to the distributor, and poerhaps this on a 95 is why they say it will not fit, but I;d shop part numbers on Rockauto. They were by far the cheapest regarding spark plugs, even considering amazon's free shipping.