I use a Wizards of Nos kit on my car (FRP)....
With normal use and a good knowledge of clutch operation there is no significant need to change the clutch from the standard item... of course if it's 'elderly' already, you may well finish it off...lol
Now, down at the POD doing grand prix starts and pushing the car through every gear is a different matter!... this will takes it toll on any clutch, so for this you may well want an uprated item...i used a Helix for around 6 years and it never slipped, it was an awesome bit of kit, but did get tiring on the leg to say the least....traffic jams were excruciating!
A progressive controller makes things a lot more managable for the car in general, and won't put the pistons under too much load at lower RPM... (depending on jet size installed of course!)..
Regards