[johnand]

I would imagine you would gain 1-2" of lift with fresh RE 4.5" coils over your current setup. Most people only net 2" of lift once their Procrap coils sag. Add 2" BB to that and you are sitting at 4" of lift. You will net 5-6" of lift from RE 4.5" coils.

What are your current hub to fender measurements?

Mine are 23.5" with new RE coils. So, compare those to yours and that will give you a fairly good idea. Obviously engines, bumpers and winches will alter the numbers slightly, but you get the point.

 

[johnand]

Plus I think I have seen or read about people using their oem arms at about 5 inches.

I would be one of them. I am running RE 4.5" springs front and rear w/ oem arms. Not the ideal setup, as I don't have a lot of droop before my front LCA contact the spring perch, but it works until the LA go on.

You don't necessarily need the RE arms, or adjustable for that matter. It is more for adjusting for tire clearance than anything else. I would imagine you'd probably be just fine with the Procomp arms if since you are already running them with ~4" of lift. You will probably net ~1" more with the RE springs.