plumbers crack
+1y
They might have sent you the 88+ kit, you need the 87 and under. I always order parts for a 86 because there is major confusion with the square carrying over to 91 and them changing to the R/V instead of C/K.
Just to confirm, I'd take a spindle to the parts shop and try joints from 86 and a set from 88+, that way you will know if you have to send it back.