spec stage 3 is really vague, and doesnt mean anything.... 6 puck clutches are overkill if you dont need them, they work like an on and off switch, and there isnt much of any leeway with using them like a stock clutch.
I just bought a TZ DXD SBC clutch, its got a kevlar lining on the steel backed plate and holds 480 foot pounds of torque and rides and feels near stock once its broken in, i had mine cryogenic treated to ensure some more reliability. I've heard nothing but good with these clutches and anything from DXD, which is really a third party modifier for DK clutches, also known as Daikin Klutch, aka, Exedy. Its good ****...
http://www.southbendclutch.com