i've never done a rb swap, but im gonna spring and say it probably won't work. the addition of the extra 2 cylinders means the motor doesn't sit in the same positioning. from what i've heard about the rb swaps, some firewall modification has to be done. if you actually do have to modify the firewall, that means the motor sits further back. if the motor if further back than the stock motor, it will translate to a different length driveshaft. www.driveshaftshop.com