Rear suspension question for CBI rear bumper.

[OCMEDIC]

I'm ordering a CBI rear bumper with a tire carrier this week and I'm curious what I need to do to my rear suspension to support it? It seems like a lot of people go with the allpro 3.5 springs but do those keep the back end high enough when the bumper goes on? Are there any other options? Im currently running a Radflo 2.5 set up. Radflo is only ten minutes from me, is there a chance I could just get heavier coils from them?

 

[kkz]

I'd just go with Metal Tech's new HD dual rate springs. But I'm pretty sure the All Pro's will work just fine.