2016 sti New Iag magnum closed deck short block w/14mm arp headstuds Oem heads decked/ported/polished gsc s2 cams 272/272, beehive springs and titanium retainers, stock/oem valves not changed but valve lash (head work done at a mashine shop) Iag Rails Iag tgv deletes Iag Comp aos Iag phenolic...