I want to run my saph without ABS and would prefer to do it neatly by properly blanking off the holes in the front and rear hubs, is there anyone that has done this or a place which provides something I can use.

I'd rather not use a rubber grommet if i can avoid it, I was thinking more along the lines of some silicone sealant and then a small plate on top of with a bolt which screws into the original thread to stop shit getting into the hole.