The Hellwig part number for the helper springs that I use is 1265EZ. Now that is for 4 identical helper leafs that go on the front segments and on the rear segments. I only use them on the rear segments. Which means that that part number will do two cars. If they are available as a pair of springs rather than four, I don't know.

I have pics of the way I have them mounted on my Cuda, but without Photbucket, I can's figure out how to post them. If anyone wants the picture, shoot me an E-mail and I can send them that way.

As to any change in the ride with the helper springs, I didn't notice it much. The Cuda rides a bit stiff in the rear anyway, so it wasn't a big difference.

P.S. I hit the archives on how to post them and couldn't get them up like that either.