Thank you sir! Glad to hear yours is working well too. The rears are taking longer on mine as well. I didn't look at the back of the mounting tabs, and assumed they were flat like they were on my MR2, and that I could mount the brackets there. Wrong! I have a bunch of material to remove to make them fit, and I'm just too busy and my back still hurts from doing the fronts too much to stand over a grinder all day again.
My miscalculation is my buddy's gain though, since we're designing a system for his AW11 MR2 using the Porsche rear calipers at all 4 corners (with a tilton prop valve) using Lotus Elise rotors, so we're using my rear calipers for mock up at the moment.
The fronts on mine are a world of difference. It's interesting, I can actually feel the difference in the calipers from front to rear. The fronts are very pronounced when they come on under light braking, but the rears are a lot more progressive due to the flex in the sliding caliper.
They also look killer behind my RPF1s