Why settle for the SC6162? for the response and power you posted about, I thought you would be looking at the pte5757 or the BWs259 with the .xxAR T3 turbine housing. When i had the BW360 on the 1JZ for a brief time, it was highly responsive and made power from 3700 all the way to my 7800 rpm redline. The 1JZ need cams and additional RPMs to really shine.