A body rear spring segment length Q, SS vs std

It should be fine. I can't reference that from mine because we used a 65 B Body Dodge front spring hanger (installed upside down) to move the rear back about an inch and an 1/8th. I had a custom shaft built that was 49 1/2". It has exactly 1" of space left before bottoming out at ride ht. When you jack it up by the body and the springs fall to the full shock extension that 1" gap becomes about 5/8". dunno if that helps..

The front segment on the SS spring is 2" shorter than the standard spring.

You can also add a 1/4 or 1/2 inch spacer between the body mount and spring hanger to gain room/center the wheel in the opening. Also be sure to check the angle of the rear shackle to make sure the top is forward of the bottom when completed.

I have 2 A bodies, one with the SS springs & I have spaced them back at the front and also a plate at the rear so the bottom of the shackles is pointing rearward. rear ujoint end play is tight but acceptable. The other A body has OE springs with no spacers & there's a bit too much ujoint end play since the driveshaft is a little too short tho there is no vibration. I am swapping rear ends between the two & was considering swapping the springs also mainly for the ride & I was wanting to get an idea of the "on paper" differences between the two so I dont get jambed up on the ujoint end play deal. I was gonna just measure with a plumb bob/tape but the arch confused things so I thought I'd post. I may have to go ahead & measure (always a smart move ) & go from there. Thanks guys!

Unless you have an early B body that the SS are 1 inch shorter.Frt segment on my 65 is 21 inches.Rocky