Hey there Maxiemac
Thank you for your help.
I presumed getting it in the centre of the cowl was what i needed to do but wasn't really sure on the process to get me there, i have never had to do that before as the firewall has always been marked, i never even thought about what you have done, that is excellent.
I made a dummy motor out of wood, the same size as the motor i am going to use so i will use that to get everything central.
I also appreciate what you have done to strengthen the firewall, good advice, i will be doing the same thing as you.
Thanks again
Airspace