Quick view ISR ISR Performance Parts Full Subframe Solid Inserts - Nissan S13/S14/Z32 ISR Performance Parts Full Subframe Solid Inserts - Nissan S13/S14/Z32 ISR (Formerly ISIS performance) Aluminum Subframe Bushing Inserts - Nissan 240sx One of the most overlooked modifcations for the aging S-chassis is replacing worn subframe... $121.50 Add to Cart