JC Whitney HD 5 leaf springs.

FWIW, I just installed the XHD A-body springs from Mancini, they cost more ($184.50 for the pair) but my experiences over the years with JCWhitney have not been good so I wasn't willing to take the chance with them.

Anyway, they are 5-leaf, each of the leafs are slightly thicker than the leafs in the 6-leaf springs I removed from the Barracuda making the total pack about 0.030" thicker than the stock 6-leaf. The stock 6-leafs had sagged to the point they were flat and the PO had made 8" long shackles to keep the car level. This made for a lot of bottoming and a jarring ride. With the new XHD springs & stock shackles the car is sitting about 1" higher than it was and the ride is smoother with no more bottoming.

I do not get any more wheel hop now and was able to cut about .27 seconds from my 60' times and improved my 1/4 mile ET by over .5 seconds.