Can a standard 4WD model be upgraded to the ZR2 suspension or are there any other structural differences? For example can a regular 2003 4WD 2 door Blazer be upgraded with a ZR2 suspension from the same year?

 

I want to say the mounting locations are different on the base 4x4 and the zr2 frame, for the control arms. Maybe difference in the leaf spring locations?

If you were to take the whole frame, and swap the body, I think that would be the way to achieve this...

 

Thanks. That kinda puts me back to square one unfortunately. The situation is I have a 2003 ZR2 with considerable salt rot on the front crossmember/subframe. It's not an immediate issue but sooner or later the mounting point for the lower control arm is going to give out. I looked at getting a donor frame and just DIY moving everything over a period of a few weeks, but I have no way to lift the body off or move it to a new frame. I havent been able to find any other ZR2s within a reasonable distance, so I thought maybe I could upgrade a standard 2-door 4WD Blazer with the suspension from my current vehicle. I know I should just junk the thing and get over it, but it runs fine and it just feels like a waste.

 

I don't know how much work you're into but you could always SAS it.

 

Thats what I would do^^^^^^

Considering the mounting the CA are going, installing leafs up there would a big upgrade!