For those who strip their interior before a track day..

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hey mate not sure what a stock sir crx is as far as i know it is some where between 980kg to 990. mine is about 880 to 890. then i put 10kgs of lead in passenger rear corner to get the weights right. in is all about corner weights when using on the track.

Are you trying to meet a minimum weight? I can't see how adding ballast anywhere could increase performance. The passenger footwell seems to be a popular choice for underweight yanks - nice and close to the centre of mass.