performance? what do you want to do with it? drag with it? drift it? or just daily drive?
as far as being collectors item is concerened... shok ka koi mol nahi... but then consider that if you pay a ludicrously high amount for this car you will not be able to sell it for the same or even slightly lower amount...
i would get a normal 4 door khoka of a 76 corrola... and do a complete rebuild... provided there is not excessive chassis rust.. it would cost you at the max 3 lac... for a fully rebuilt car.