After buyin endless pads for my ek9 id never try another brand again. There brillaint! Definetly worth the extra money! So id say there 4pot brakes are the best!
I'm sure they've improved their design, but years ago (in the last millennium ) I had the dynalite IIs fitted to my DC2 and they were absolutely garbage.
We bled the brakes so many times and couldn't figure out why the pedal was still soft... it only occurred to us to check on the caliper itself and noted (since we bled with vacuum) that when stepping on the brake pedal, the caliper itself would flex!!
I know that Brian Hasty from FastBrakes has always used Wilwood, but after that particular experience, I went with used NA1 calipers then Spoon calipers shortly after and adored the fact that they used OEM sized brake pads - which are supported by all major performance pad makers.
Yes. He has 15". You cuold download on wilwood site a shape to try if there are some interference problem.
My friends is so happy. He brake and brake forever.