i fitted the ae86/rx7 one it fits fine, when i said it was a little too long its cos i hadn't screwed it in enough , get some pliers on it to turn it if it gets a bit stiff when you're trying to do it up, same as you may need pliers to undo the standard button to
mine worked with a good hard tug, fitting dw knob also made life easier as i could yank it hard and not worry bout having to keep my finger on the button (that almost sounds sexual lol)