I roughly plotted the points on the compressor map of the 6758 turbos, they seem to be no worse than the 3071 & with head work IMHO they will be fine. The difficult thing is that they are about 2" longer on the front side and 1" longer on the back side. Pricing will be around $1700-$2200 each. I have heard that on a 3.0L 2JZ with Full Race manifold, no cams, no head work that a EFR turbo is making about 10psi @ 2800rpm & 24psi @ 3800rpm. I don't recall if this is a single turbo setup, twin or single scroll or twin turbo setup though. "If" the compressor cover will fit under a MSP manifold there is no way in hell the WG bracket will not clear. The other problem is that the down pipe is over 3.5"! again "if" the turbo will bolt up to a manifold then the inlet and down pipe will be very difficult to fit.