[NoVA Cobra]

So I had a little wiggle in rear u-joint so I thought I'd replace it. After removing driveshaft and front u-joint - I realized the rear u-joint caps are pressed onto driveshaft without retainer rings and are non-serviceable. So how to source a replacement driveshaft? Or is there another solution? I attached pics of the numbers I see, but I can't find anything to match. I can't find the front u-joint as well based on the pic, but I figure I could just measure it to get that one.