Help with Daystar bump stops

Just bought a set of Daystar KJ09101's for the front of my
87 XJ.
Took the originals off which have the stud in the factory cup.

The daystars have a hole all the way thru them,am I
to get a long bolt with a washer and just thread it where the
cup was.
If I do that the head of the bolt will be sticking out the bottom.

Or do I need to use the original cup,if so I will have to somehow
get the original rubber out of cup and then drive the daystars
up in the cup somehow.

I searched and could not find out anything,sure could use
a little help please.

Here is the link to the bumpstops:
http://www.daystarweb.com/productdetail.php?productID=351

If you google the part number stamped in the bumpstop, and Jeep, you find install instructions for the various lifts using that bumpstop.

4. Pull off and remove the factory rubber bump stop. To
install the new push-in type Polyurethane bump stop,
align the bump stop with the opening, use a block of wood
between the bump stop and the axle. Raise the floor
jack to drive in the bump stop

Click to expand...

you wont need to go through the bump with a bolt. just swap them out. as far as the bumps you got. i know that daystar had a packaging mix up and you might have got the wrong year bumps. (we ran into it). pull your existing bump out to make sure that the ends look the same.

*posted on Jeep Forum aswell

Well got one out,almost,using a 1/2 hole saw and a screwdriver.Just kept carving at it
with the hole saw and digging at it with a screwdriver.
Mine does not just pop out,it is made into the cup.

But I have it about 90% out.

Done
Thanks to all that replied!