I'm picking up a supercharger and a d15b7 in like a week. I already plan on putting a z6 head on the b7 for a little more added power. I was wondering do b7 rods have the same kind of power rating as other D's? ~220ish The only reason why I ask is the supercharger I'm getting the guy says that it's got an 8 pound pulley instead of the 6 and I know it's only 2 pounds but I was wondering if that could make or break the engine? I plan on getting it tuned before I even start it, you know to at least have a base map so I don't blow it up is there anything that I should look out for when I install this kit? and any tips would be great. Thanks!