Back along I bought a Sparco Luxor Gaiter and was planning on attaching it to a Sparco gear knob. Trouble is, although it's supposed to be compatible with Sparco knobs I've yet to find one that screws into the gaiter's fittings! I've been told that the R-Speed fits once you unscrew the knob's bottom, but nope, it still doesn't fit! Anyone got any idea what knob the blasted Luxor gaiter's compatible with before I tear my hair out? :evil: