For all of you out there that want to maximize the braking potential of your Lotus, you need to 86 the ABS and brake booster and install a brake balance system with manual brakes. If the pedal effort is too great, you can resize the masters to decrease the effort. Therefore, you now have a brake system that can be fine tuned to you. I do not have Phil's brake system but have Pilbeam's system. It installs differently but provides the same functionality in the end. Phil did not have his system available when I was searching for a fix for the brake biasing problem with my Exige. It took a couple of tries to get it right and Phil has done this for you so you will save money. In the end, I swapped out the AP calipers and installed Wilwood calipers but they do require an adapter bracket. I have the same size calipers, front and rear but have the larger rotors, 305mm, on the front and 288mm on the rear.
I would recommend working with Phil because calling across the pond to get information or product was not always that convenient. If you have never done this type of upgrade before, you are going to need a little hand holding to get the system dialed in for you.