RWA1690-SWK 2.3 Short block with 5.2″ reconditioned stock rods w/ARP rod bolts installed. We use Keith Black hyperutectic pistons RWA1563, Total Seal classic rings RWA1569 and Mahle/M77 rod bearings RWA1518 and Mahle/M77 main bearings RWA1526. We can supply short blocks for either front or rear sump oil pans. These are custom built to order, some over bores might not be available at time of order. Please email or call us when ordering. Please allow 2 weeks for assembly.