Today is D-Day, the Original 1200cc is going to be taken out and the New 1641cc is going to be fitted.
1200cc on the left- 1641cc on the right.
Big thank you to Darren who helped me to do the job.
Engine in... All connected.
Everything went well apart from the fact that I had an electric fault, It's now fixxed. But we couldn't do any firther because I still have the 6v starter motor from the original engine and I will have to get a new one on monday.