Thanks for the offer, but a converter thats around 3000 for a 1J will flash out to over 4000 behind the 4.5. The current converter was just on 3000 behind the big HP 5M I had but with the torque of the 4.5 it gets twisted out to over 4000 (and I haven't even hit 14 psi yet). I'm putting a stock 5M converter in which should top out at about 2900-3000 behind the 1FZ.