yeah you need to have the spline just sitting inside the clutch to install all of this, although you should be able to placeit up next to the block and get an idea of where it goes. and yeah you need all of the tabs that hook to the allen bolts for it to work or be installed properly, if yo have it, THEY will look at it, just like a rollcage, they will look at it, and inspect it. so call good ole' camp 13million and tell them you want your shit!