From my personal experience i wouldn't bother with anything other than a 6 paddle.

The helix as said above is apparently the one to go for and it what I'll be putting in mine this summer although I'll be using an AP 6 paddle centre plate

The std ford clutches you get these days don't seem to be anything like as good as the ones from years ago?

I even tried a 6 paddle centre with a new ford cover and it wasn't upto the torque you get running stage 3