First, you have the 3.5" mounting bolt centers, right?
And Series II is the 3 piston caliper?
When you changed to the Willwoods, what was your change in piston area? What were your driving impressions after you did this?
What I'm wrestling with if you keep the piston area but double the pad area - what are the benefits?
The obvious is that the pads will experience less heat and wear which is good on the track and street respectively.
But as far as the actual driving experience for street - would you tell any difference?
I've just though that having more pad area may make for a less spongy pedal because structural deflection is now carried by more material.