I want to swap RB20det into my A31 Cefiro, got two choices of RBs, one is Cefiro Turbo engine from Japan and another is Skyline Gts-t, the Cefiro turbo engine sure can fit, but the dashboard is the same and HP is lower than Skyline, so I prefer the Skyline one, but don't know wether the gearbox can use back, if it's an FR, then I can use Skyline gearbox...need some help here guys, thanks first!!!