That's GREAT word MPK1996! So you're sayin' the Wilwood kit might work with stock knuckles and their kit has extra thick (heavier) rotors? Lets talk about comparing the stock caliper weight vs Wilwood vs SSBC? SSBC is less expensive, isn't it? Is the SSBC heavier cause of the 8 pistons? Any drawbacks?
What did yours cost since you already had R1 rotors?
I've got SSBC's on my '68 mustang. Their claim to fame for our raptors is they're super low-profile and work better with stock or tighter wheels right?
No, the Wilwood rotor isn't any thicker or even larger diameter than the stock (well, my R1 concepts) rotor. They just sit more in board towards the knuckle to gain additional clearance with wheels. They def will work with a stock setup, but if you have aftermarket knuckles (like a mid travel kit), make sure to test fit them first. One company knows they can go out a bit further (the guy making the knuckle lets say) and wilwood knows they have room to go inboard. until you try to use both of them together. basically stacking tolerances.
I didn't get a weight on any of them. the SSBCs are pretty good size. They are 8 piston. they stick out a decent bit further away than stock (towards the spokes of the wheel). I'm not sure they would fit with stock wheels without a say 1/8 or 1/4" spacer. My after market wheels fit and I would imagine most of them would. They tend to sit out a bit more. But if you have a thinner aftermarket wheel without much offset, you could be in trouble. again. its easy to pull your old caliper and hang them with a bungee cord. install the new caliper lightly. and test fit the wheel.
I haven't found any drawbacks yet. They def stop better than the stock brakes with r1 concept pads, on the same rotors.
I think the cost was like $1500 or something. You can buy direct from SSBC with and without rotors and a couple of different colors. I got mine from summitracing.