I appreciate all the input yet alot of what I originally asked has not been discussed. E5 with superchargers - who can answer how much cooler it runs. 8-71 at 1:1 ratio vs 10 overdrive 6-71 - 411 per rev 6-71 - 436 per rev 8-71. How much torque loss will the 8-71 have with the extra air being forced at a lower 1:1.
This car is at 2500 altitude and running anywhere fro 40 degrees to 100 in summer
Bottom line looking for the proper application for this lil puppy motor!?