Instructions on what you require and how to replace the cam belt are freely available on the MTWC website: https://www.mtwc.co.uk/wp-content/uploads/2018/09/M3W-Cam-Belt-Change-modified.pdf. There does seem to be a bad batch of cam belts about that have surface cracking. Is there any other part you should get? The fuel pump should be replaced with a Walbro item : https://www.mtwc.co.uk/wp-content/u...-pump-replacement-April-2020-update.pdf. You don't want to break down in the middle of the desert!