I asked him about it early last year (one of the fronts broke on my PV) and he hadn't. I think that the 122/1800 front springs are a more standard size and he may have an off-the-shelf source for them. But the PV springs are an unusually small diameter. I ended up just getting some stock replacements from www.GCP.SE. They lifted the front end about 2 inches up from where the settled out originals springs sat. Which is good - it have only about 1/2 inch of travel in the front before hitting the bump stops.

I still have the original springs in the back and the car does sit a little low and feel a bit wallowy with just my young kids in the back seat. Something a touch stiffer would be a good idea. I was just going to put a set of new springs back there as well - thinking they might just be sagged from 40 years of holding up the car like the fronts were.