Originally Posted by JAMMINKRAZY

It is definately an upgrade. The KHZ mount uses a base mount and a set of 2 top blocks. You can remove the screws that hold the top blocks to the base mount and the blocks will pull off. With an engine mounted to the blocks, this allows you to remove the engine without having to reset the mesh. You can also buy extra top block sets to put on different engines. this will allow you to swap engines out without having to reset the mesh. Also if you have the extended one, it will cut down on flex, extending the life of clutch bearings. IMO it is one of the best hopups you can buy.