I dont think that is the right part though. This comes right out of the front differential. Must be some kind of a shaft that goes into the differential and the drive cup is hooked to it. The cup does not have a set screw on it. I am wondering if the shaft pulls out of the differential or if i have to buy a whole new one just to replace that cup. The dog bone musta broke the cup in half. pins are gone in the dog bone too so i know I need a new one of those.
Those drive cups have to be removed from inside the diff. You take the diff out and remove the gears from it and there is a small E-clip inside that you remove and the drive cup slides out. You need these parts.
[link=http://allaboutfunhobbies.com/store/catalog/product_info.php/cPath/222_2_19_35/products_id/77]Drive Cup C[/link]