I remember when I had Lucas brake pads, DBA slotted & drilled Gold series brake rotors (for the NA6) and new brake fluid.
After 3 'hot laps', there was smoke pouring out from the front brakes and everything was going spongy
Think Okibi has a video or pics somewhere...
I had already tried Pagids and a few other highly recommended pads but I soon realised I was going over the thermal capacity of the braking system as the car was going so much faster and was braking much harder (this of course is my interpretation for having to literally stand on the brakes to shave off speed).
So I decided to go for the Wilwood kit from Goodwin.
Brian got it to me within 2 weeks
No complaints since on the braking department
The calipers, rotors and Alumalite centre hats are particularly light. Rear rotors are bigger albeit with the standard caliper (spacer bracket provided) & Porterfield pads all around.
I
highly recommend it if you are really
pushing some big horsepower (errm say 200 rwkw??? I do not know what is the definition these days
) and you have reached the limit of your brakes (after using the best pads, rotors & brake fluids). Otherwise, if you have never
experienced brake fade, spongy brakes or smoke/fire after continuous hard braking then it probably is not necessary.
However, if it is for 'bling' (as 16bit mentioned) then at least the
Goodwin/Wilwood BBK will fit under most 16"x7" wheels. There are
other 'bling' brakes out there (i.e. Brembo, Alcons by Trust, Project Mu, Endless do a 6 small piston caliper
) for
more money but they are usually fronts only and will
require much larger wheels (17" & above) and
playing with offsets to clear the brake caliper to wheel spoke issue.
I hope this provides more information to make your decision