I am going to use the Mopar S/S springs on my '63 & '65 B-body builds. What rear shocks have any of you used, and what is the correct length, or what vehicle application will work properly for this set-up ? I know in the past, on some vehicles, I've had to raise the axle to meet the shock length bottom end, after bolting in the top end. Was hoping to find the correct length, so as to NOT limit the shocks travel. Thanks for any input, and guidance on this...