Hi all, I have received an old "Invader 12 speed" which a family member rode 20+ years ago. Unfortunately, it was sitting in pieces in someone's garage. I am looking to see if I can get this bike rideable again. Does anyone know if parts are still available for it or what alternate parts would fit? I am looking to replace the chain, possibly the derailers (currently Sunrace), it will need a new set of brakes, and respoke or replace of the rims. Thanks