i have searched the forums and phoned a few dealers - but nobody seems sure -
i had a short list of repacement speakers - infinity kappa 50.5cs, alpine spr136a, kenwood kfc-psr51p, alpine spx137a possibly - as far as i can tell, the infinity and the kenwood will definately fit but will the other options - i quite fancy the alpine 136a only because i like the alpine 17cm coaxial that i put in the rear.
any definite knowledge here rather than maybe? i presume that deeper speakers may catch on something but then the question is what?