Spicer 5-793X U-Joint Kit Bronze, 3.6 Inch

Are these correct for a 2003 silverado 1500 z71 ext cab 6.5' bed alum. driveline? need both for front & rear.

Will this sit in the rear yoke straps tight? I think i ordered wrong u joint the straps will not tighten on caps. Does the inside clamp act as a shim

Will it fit a '99 (nbs) silverado ext cab short bed with a 9.5" differential (at the differential?)

Is this supposed to fit a 2wd 2002 Sierra? I got a yes before buying and now after getting the old u joint out, the new one sits loose