i don;t see a prob with stock sleeve's 4 bottle's and counting on the coupe, many 1-5 5th spray over a loney bridge on sat a whole bottle in a night. but i will say they are aren't as strong as say gsr b16 sleeve's, when building a race motor witch anyhitng over 11.5-11.7 is no matter what you think, shit something is going to break be it spun bearing's(happen's alot on lsvtec's), or fired rings or busted sleeve's,