Genuine Subaru Replacement Short Block Part # 10103AC880 - 10103AC880 | Subaru Online Parts
IAG Performance / Crest CNC Stage X 2.5L Subaru Billet Aluminum Short Block For WRX, STI, Legacy GT and Forester XT. Built power output rating 1000+BHP.
IAG Performance S1 FA20 Short Block Stage 1 FA20 Subaru Short Block (10.5:1 Compression Ratio)