I dont think Bruce is on this forum. Get on frybrid or wvodesigns and look up a guy named brucem. he is using a linehauler in his conversion. Or at least he was. Smart dude and will give you tons of info about that.I am going to add a heat exchanger. FPHE is the standard, but I've also seen the Arctic Fox linehauler mentioned a few times. Does anyone have experience with these? Also, can I mount a linehauler or FPHE to my firewall in the engine compartment? I would much prefer to mount there rather than on the framewall for better efficiency.