As long as the engines are both the same number of cyls they should be swappable. Parts should be interchangable between cases also. Models on 4cyls and sixes with BA10 Peugeot trannies have 21 spline input shafts and the rest of sixes have 23 splines. The different splined shafts are swappable between cases. <img src="/forums/images/graemlins/cheers.gif" alt="" />