The Yank driveplate is a direct fit replacement for your OEM version. The yank version is thicker to eliminate the flexing that the OEM version has under high H.P. It also comes with a dual pattern bolt circle so for are customers that are running our six lug converters they can use all six mounting points. Just because its thicker and stronger does not mean heavier we are able to keep weight down with its unique shape. This is a must have item for anyone who has all the upgrades on there C5 and wants the best.