This is the guy i got the back plate off, i ordered it on a monday and got it Friday was bloody fast from the USA
http://www.ebay.co.uk/itm/360478922478
The engine mounts are harder to find and only place again was the USA
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXALUD&P=7
Just so you know if you are going to do this when you take pull start off you will see on the drives haft a pin that goes into the pull start, you will need to strip the engine down and grind the pin off, only took me 30mins to do so if you have any problems iv happy to help you