OK after fitting the GTX3582r final run produced 399.8kw :banghead: but pulled 401.4 on one run. 05 BF. Mods are; Process west stage 3.3 kit, custom 4" zorst, 60lb siemens, valve springs, GTX3582r. Running stock FG F6 bottom end and stock zf6 . Big thanks to Kent and the boys at Hi-Torque Performance.