shocks and coil over question

I'm looking at the 5100's for my new shocks and am wondering, do I need a new coil spring? Can I use my old one or do I not use any at all? How exactly does that work out? If I need a new one, what is a good one to get?

I'm a total newb so be patient with my seemingly silly question please.......

 

Hi, you can use your old coils or upgrade to after market ones, if you have a lot a miles on yours you may want to replace them, that's up to you.

 

Thank You. If I were to upgrade, I am just shy of 100,000 miles, what would be a good choice? I do haul and tow but have no interest in a lift of any sort. (well....maybe a very little lift at some point but not today.)

 

I would check this site out http://downsouthmotorsports.com they have the 5100's and whole suspension packages also you could find some factory TRD Off Road coils with OEM shocks from a 2012-13 year model with low miles that work great in the FS section on this site, but if you want some lift go with the 5100's, hope that helps.