Good luck with the transplant. How different are the electrics on the new engine? Many of the connectors should be the same. The pedal box will probably be more awkward than fitting the engine. Remember to bridge the inhibitor switch if you go for the auto to manual conversion. If you decide to keep the autobox with the new engine the spigot bush in the crank may need changing it could be a different size. Once again good luck…..look forward to seeing the pics
stuart