All you will need is one nut and bolt for this mod. Keep in mind that the bracket will only be mounted with this one nut and bolt, but I can assure you that it is solid and does not wiggle. For additional stability, I would advise using a zip tie to secure the tubes as shown.
This should be obvious but I didn't mention it in the red text but you are supposed to cut at the red line as well and round out the bottom section of it to accommodate the SC reservoir. Just follow the example picture. It's very straight forward.
