i've put a mustang steering rack in my xp falcon. it needs a collapsable column to get engineered so i got a xw steering column and have adapted it to suit. the only thing i need now is a female 3/4 very fine spline to weld on the bottom of the new column shaft to mate with my rack. does anyone know where i could source this spline? do i have to get it off a mustang or is it a pretty standard on most cars? thanks.