These lifters are the 2nd-design, upgraded LS7 lifters. The item "HYLIFT Hydraulic Roller Lifters Set/16 for Chevy 5.3 5.7 6.0 LS1 LS2 LS7 US-MADE" is in sale since Tuesday, October 25, 2016. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Camshafts, Lifters & Parts". The seller is "motorwizards" and is located in Mobile, Alabama. This item can be shipped worldwide.