I apologize in advance for the long post but when I did a search nothing really matched my situation. I just wanted to ask everyones opinion on this. I recently purchased a set of Edelbrock ( Eibach made ) springs. After speaking with Marc @SC&C I am a bit confused.
I believe my car has an early style rear with the bolt on "half round" shape retainers that bolt the spring to a flat steel pad on the rear. I believe the spring should only have one pigtail. (bottom) Is this correct? The kit that I bought Edelbrock part #5240 lists 67-72 right on the box and has two pigtails on the rear springs. Before I bought the springs I checked the Edelbrock web site and they list the kit 5240 for 67s as well as 68-72. Something seems wrong here to me why wouldn't they combine 67-72 into one coluimn? My other concern is that Marc had mentioned that 68 -72 front springs are shorter than 64-67. I understand that these springs are supposed to lower the car by 1.3" but I am concerned more with the safety aspects of installing them.
I've always seen 64-67 being split from 68-72 as far as many of the suspension components go and I just want to be sure before I proceed. I have not tried to install these yet but my suspension is pretty much completely out of the car. I am just wondering if what I have will work or is this listed as the wrong application. If anyone else is using these the spring part numbers I have are
front: 178191 /3856.101
rear: 167534/3856.002

Any thoughts or insight is greatly appreciated
Thanks

I wish someone would have answered this. I have the opposite problem. I got 3855.140 Eibach for a 67 Chevelle. The rear springs have a pigtail/taper at the bottom and stay the same diameter all the way to the top. The original rear springs have a pigtail top and bottom. The Eibachs fit in there, but they actually raise the car 1/2".

I got-

Rear 3855.002/226512 on the spring
Front 3855.101/226665 on the spring

Eibach tech says these are the correct coils, but why does the car have the cup both top and bottom to mount the tapered part onto if only the bottom needs it. I'm not convinced...

bump