4runner 2004, front shocks / spring coils

Hello,
Got those KYB front shocks (or struts, not sure about the difference..) - see attached image.
I'm about to install them tomorrow.
My question is if at the same time I can replace the front spring coils as well (as a separate part), or it should be one part only which contains the shocks itself and the spring as one unit?
Will appreciate some guidance.
Thanks.

 

Your questions slightly confusing. Are you asking about the spring that goes around the shock? Are you asking do you need to replace that? Sorry could you clarify more. Thanks

 

Sure! Let me be more clear.
I'm about to replace my front shocks tomorrow (image attached).
At the same time, I want to replace the spring coil - yes, the one around the shock.
My question if I can buy those springs and install it with the shocks I got already, or it should be one piece - shock and spring around it - together.

 

Im not familiar with the shock you bought. So you will need to figure out what spring fits it. However it does need a spring and you will need the proper tools to put the spring on.