For my 69 Z/28 I am going with spiral shocks but after 6 months I am still looking for one of the front 477ís. I have read a lot of postings that say the ride with the NOS spiral shocks are terrible and that repops arenít much better.
For my other 69 Camaro, I bought Edelbrock Classics from Summit.
Rear, Edelbrock EDL-34046, $46.13 each: http://www.summitracing.com/parts/EDL-34046/
Front, Edelbrock EDL-33041: http://www.summitracing.com/parts/EDL-33041/
Cost is unknown on the fronts because itís out of stock and I donít think their substitute shock is for Camaros.