Wilwood 4 piston VS 6 piston?

[Robert Youngfleisch]

Hello,

I am planning on buying Wilwood brake setup for my 68 Chevelle.
Mostly street use,, some drag & I would like to take it on a road course. But not planning to KILL IT(Push it to it's limits) on a road course. And to something like when you go to a Good Guys event and they have the cones setup.
I have stock disc brake in the front and read drums now.

Either: 4 piston w/ 12.19 rotors or 6 piston w/ 12.19 rotors

Is the 6 piston setup worth the extra $300 and change?
Is the 6 piston that much better than the 4 piston?
How much of an improvement is it over stock?

Thanks
Rob