so i called up apexi usa today to find out if i can modify the RB25DET VCT Power FC to fit the VG30DETT ... The guy there said i could BUT i don't need to as apexi usa offers a Power FC for the VG30DETT which he explained is baisically a RB25DET VCT FC thats modded internally to Plug ad Play into the VG30DETT ..i guess the mods done to it also take into consideration the VG MAF and fuel and all the other gizmos that the Z comes with ...