Lemme square it away for all the rocket scientists, I'm kidding. Yes spark plug wire kits for V8's can come in a universal kit with X amount of wire in the box along with a crimper for PROPER crimps, just like the factory ones toooooooo.. I solder mine, but hey I have experience. As for being able to make two kits from one V8 kit, lets do the math here, lets say a V8 kit comes with 15' of premium wire, lets say it takes 7' of wire to make a set for a Supra, 7 goezinto 15 two times with 1 left over, so there you have it, and you even have a foot of wire left over. So next time, dont let your panties get all in a bunch, just try see that were all Supra folk here and thats kinda like we all play for the same team.