1G's have the 14B turbo.....2G's have the T-25 ..which is pretty much 1/2 the size:alien2: Its possble to swap them out yes...but the piping is a little different , the T-25's outlet is underneath the turbo , the 14B's outlet is on top......
Good news is that the 14B is realiable to 21 Psi and not quite double the CFM of the T-25