Just got off the phone with Lance at SPF. they are directing wilwood to send me the PI 41mm caliper with the street compound brake material.
What I am hearing is that there were multiple things in play, and in the legal scape that is 2008, there was no real way for SPF or WW to say anything to anyone.
At SPFs direction, WW is substituting the 41mm with the softer compound. From what i was told, this has been tested on a car and they (WW) are confident in the solution.
They also counciled that the brakes should be thoughtfully reviewed, cleaned (pads and rotors ) with brakeekleen cleaner and bedded prior to operation. as opposed to just putting your motor in and driving away.
Also the low vac situation on the "R" brand motors sound like a tuning issue.
I wonder if there is a repro smiths vacuum guage>?
Well, WW will send me a box with 41's and I will take pictures and test and advise.
--theoretically, this should cure the deal.
now onto getting the motor built. Ford Racing BOSS Block goes under the knife tomorrow.
--Steve