RalliSpec FA20 Short Block S1 (600bhp) - Street Spec
RalliSpec EJ25 Short Block S4 (1150bhp) - Race Spec Pro
RalliSpec EJ25 Short Block S3 (950bhp) - Race Spec Long Rod
RalliSpec EJ25 Short Block S3 (950bhp) - Race Spec Std
RalliSpec EJ25 Short Block S2 (750bhp) - Street Spec Pro
RalliSpec EJ25 Short Block S1 (550bhp) - Street Spec Std
OEM Type RA EJ25 2.5L Subaru STi Shortblock