I ran a dual friction on the street,for one summer, and have to agree.Not a fan.
It hooks just too hard, and breaks stuff.I only have a 367 cuber, but that CFII broke a lot of stuff. I switched to a Chrysler 340 organic and stopped breaking stuff.Well except the disc became the fuse. Still discs are way cheaper than trannys,driveshafts and u-joints.Now it just spits out the springs.