Thats probably why the company reccomended the Vig. single disc over the multi disc since I told them my car will be driven mostly on the street.I keep waiting for a drop in price.The last time I priced one I think it was $730 a few years ago.Sweet6 said:The mutidisc is only needed to lock the converter at WOT. But locking the converter at WOT is hard on the trans if you lock it up before 3rd gear. I have a 7disc and have never locked it at WOT. I decided I did not want to take a chance at breaking my trans for minimal gains in ET. Single disc lock up is great for a street car.