you can get them from direct. I just went to the spares department and had the salesperson look the part up and order.
I think the part number is the same for left and right, so you need to order 2..

I got the parts from in two days, took about 20 min to replace, only 2 bolts on each striker assy. You have to remove the interior moulding which the interior light is connected to get it off, obviously put the roof down too

Price from without any discount was about $170-190

I did see hardtopguy.com sells them also, but the delivery times would be quite a bit longer. They were US $49 each i think.

I must say it was quite suprising how much difference this had on the road noise. Before I had my radio(standard) distorting so I could hear it and now its crystal..!!