'57 rear leaf spring swap

[pete57]

Hi guys, im lookin for some rear leaf springs for my 57. I got all my mustangII front stuff from speedway and was looking at their rear spring set from TCI, I was also looking at the spring set from CPP. Both are about the same price and both sets are bolt on I think. My question is are one of these better than the other or is there a better setup out there. Both sets come with all springs, brackets, shocks, hardware. My rearend is a 9 bolt from '88 t/a gta.
Thanks for any help..