Maybe send an email to the website in your link they are the experts in what it all means as they sell them i would say the more expensive they are the better and the best ones would be good for a vr6.
Ahh thats fairly easy you can trace all the bulbs to the wire colours anyway i connected all of mine on the nearside lamp unit i will have a look later and write it down for you.
Sounds like he has an ST look a like or he doesn't know how to drive it. My friends have a Fiat coupe Turbo and an St and the ST is alot quicker the coupe was running 280bhp and the St had just a remap.