ok grounded wires are what nology uses, on each wire there is a metal strap that goes to a valve cover bolt which supplies a ground for that wire, as in size id go with the 9.5’s since 10’s wont fit the wire holders to keep them off of things
i think the ground on each wire just reduces any interferance there may be floating around in the electrical system. i’d also just go with stock blue NGK’s, unless you have some crazy all motor race car. my bro had a completely stock ignition system on a 240 whp all motor integra and it was fine.
just go with NGK, and they are a little bit cheaper in price as well
quite a few guys on here just run NGK blues, which are good replacements for or 15 year old cars
for what the plug wires are, even the OBX’s you arent going to notice hardly any difference really, unless you have plans for aftermarket ignition system, and for that i would go to http://www.msdignition.com/
why do you need something better than stock? does your setup require wires that that are “better” than stock?
there are many cars pushing 300+hp that are using stock wires and ignition systems. if the ones you have are in good condition, why replace them? you are not gonna see a difference with new wires or aftermarket wires unless your wires are old, cracking, and non-working.
imo save your money for something worth while. replacing something that doesn’t need replacing is just a waste of money.
There was a test done a while ago where stock Honda spark plug wires were tested against popular aftermarket ones. The stock ones outperformed the aftermarkets. Since they don’t supply any real power, I believe it was based solely on voltage consistency or something along the lines.