hi bro,i had received and installed the sp rubber on my waja. 10m was about to enough for four door,extra 1 or 2 m will be nice.u can recommend if any other waja driver ask about.
Have not yet try out about the less wind sound but will try it tmr when go back to my grandparents house.will give feedback on that.
quite easy to use and stick.sharing some picture tat i stick on the door frame.