11 sec. build cost?

That is to wide and varied to nail down an exact cost due to;

Regional pricing
Machine work needed for every part purchased or re-worked
Cost of parts. Forged vs. cast and grade of the part
Exact parts used
Re-engineering (AKA stroking)
Extra parts that may not be needed but may have merit.
IE; oil cooler, new/larger cooling system

I suggest to everyone that has an ride this quick, IF you have your receipts, chime in.